diff --git a/unix/intl/Makefile.in b/unix/intl/Makefile.in
new file mode 100644
index 0000000..c3468f9
--- /dev/null
+++ b/unix/intl/Makefile.in
@@ -0,0 +1,493 @@
+# Makefile for directory with message catalog handling library of GNU gettext
+# Copyright (C) 1995-1998, 2000-2003 Free Software Foundation, Inc.
+#
+# This program is free software; you can redistribute it and/or modify it
+# under the terms of the GNU Library General Public License as published
+# by the Free Software Foundation; either version 2, or (at your option)
+# any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+# Library General Public License for more details.
+#
+# You should have received a copy of the GNU Library General Public
+# License along with this program; if not, write to the Free Software
+# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
+# USA.
+
+PACKAGE = @PACKAGE@
+VERSION = @VERSION@
+
+SHELL = /bin/sh
+
+srcdir = @srcdir@
+top_srcdir = @top_srcdir@
+top_builddir = ..
+VPATH = $(srcdir)
+
+prefix = @prefix@
+exec_prefix = @exec_prefix@
+transform = @program_transform_name@
+libdir = @libdir@
+includedir = @includedir@
+datadir = @datadir@
+localedir = $(datadir)/locale
+gettextsrcdir = $(datadir)/gettext/intl
+aliaspath = $(localedir)
+subdir = intl
+
+INSTALL = @INSTALL@
+INSTALL_DATA = @INSTALL_DATA@
+MKINSTALLDIRS = @MKINSTALLDIRS@
+mkinstalldirs = $(SHELL) $(MKINSTALLDIRS)
+
+l = @INTL_LIBTOOL_SUFFIX_PREFIX@
+
+AR = ar
+CC = @CC@
+LIBTOOL = @LIBTOOL@
+RANLIB = @RANLIB@
+YACC = @INTLBISON@ -y -d
+YFLAGS = --name-prefix=__gettext
+
+DEFS = -DLOCALEDIR=\"$(localedir)\" -DLOCALE_ALIAS_PATH=\"$(aliaspath)\" \
+-DLIBDIR=\"$(libdir)\" -DIN_LIBINTL \
+-DENABLE_RELOCATABLE=1 -DIN_LIBRARY -DINSTALLDIR=\"$(libdir)\" -DNO_XMALLOC \
+-Dset_relocation_prefix=libintl_set_relocation_prefix \
+-Drelocate=libintl_relocate \
+-DDEPENDS_ON_LIBICONV=1 @DEFS@
+CPPFLAGS = @CPPFLAGS@
+CFLAGS = @CFLAGS@
+LDFLAGS = @LDFLAGS@
+LIBS = @LIBS@
+
+COMPILE = $(CC) -c $(DEFS) $(INCLUDES) $(CPPFLAGS) $(CFLAGS) $(XCFLAGS)
+
+HEADERS = \
+  gmo.h \
+  gettextP.h \
+  hash-string.h \
+  loadinfo.h \
+  plural-exp.h \
+  eval-plural.h \
+  localcharset.h \
+  relocatable.h \
+  xsize.h \
+  printf-args.h printf-args.c \
+  printf-parse.h wprintf-parse.h printf-parse.c \
+  vasnprintf.h vasnwprintf.h vasnprintf.c \
+  os2compat.h \
+  libgnuintl.h.in
+SOURCES = \
+  bindtextdom.c \
+  dcgettext.c \
+  dgettext.c \
+  gettext.c \
+  finddomain.c \
+  loadmsgcat.c \
+  localealias.c \
+  textdomain.c \
+  l10nflist.c \
+  explodename.c \
+  dcigettext.c \
+  dcngettext.c \
+  dngettext.c \
+  ngettext.c \
+  plural.y \
+  plural-exp.c \
+  localcharset.c \
+  relocatable.c \
+  localename.c \
+  log.c \
+  printf.c \
+  osdep.c \
+  os2compat.c \
+  intl-compat.c
+OBJECTS = \
+  bindtextdom.$lo \
+  dcgettext.$lo \
+  dgettext.$lo \
+  gettext.$lo \
+  finddomain.$lo \
+  loadmsgcat.$lo \
+  localealias.$lo \
+  textdomain.$lo \
+  l10nflist.$lo \
+  explodename.$lo \
+  dcigettext.$lo \
+  dcngettext.$lo \
+  dngettext.$lo \
+  ngettext.$lo \
+  plural.$lo \
+  plural-exp.$lo \
+  localcharset.$lo \
+  relocatable.$lo \
+  localename.$lo \
+  log.$lo \
+  printf.$lo \
+  osdep.$lo \
+  intl-compat.$lo
+DISTFILES.common = Makefile.in \
+config.charset locale.alias ref-add.sin ref-del.sin $(HEADERS) $(SOURCES)
+DISTFILES.generated = plural.c
+DISTFILES.normal = VERSION
+DISTFILES.gettext = COPYING.LIB-2.0 COPYING.LIB-2.1 libintl.glibc \
+libgnuintl.h_vms Makefile.vms \
+libgnuintl.h.msvc-static libgnuintl.h.msvc-shared README.woe32 Makefile.msvc
+DISTFILES.obsolete = xopen-msg.sed linux-msg.sed po2tbl.sed.in cat-compat.c \
+COPYING.LIB-2 gettext.h libgettext.h plural-eval.c libgnuintl.h
+
+all: all-@USE_INCLUDED_LIBINTL@
+all-yes: libintl.$la libintl.h charset.alias ref-add.sed ref-del.sed
+all-no: all-no-@BUILD_INCLUDED_LIBINTL@
+all-no-yes: libgnuintl.$la
+all-no-no:
+
+libintl.a libgnuintl.a: $(OBJECTS)
+	rm -f $@
+	$(AR) cru $@ $(OBJECTS)
+	$(RANLIB) $@
+
+libintl.la libgnuintl.la: $(OBJECTS)
+	$(LIBTOOL) --mode=link \
+	  $(CC) $(CPPFLAGS) $(CFLAGS) $(XCFLAGS) $(LDFLAGS) -o $@ \
+	  $(OBJECTS) @LTLIBICONV@ $(LIBS) -lc \
+	  -version-info $(LTV_CURRENT):$(LTV_REVISION):$(LTV_AGE) \
+	  -rpath $(libdir) \
+	  -no-undefined
+
+# Libtool's library version information for libintl.
+# Before making a gettext release, the gettext maintainer must change this
+# according to the libtool documentation, section "Library interface versions".
+# Maintainers of other packages that include the intl directory must *not*
+# change these values.
+LTV_CURRENT=7
+LTV_REVISION=0
+LTV_AGE=4
+
+.SUFFIXES:
+.SUFFIXES: .c .y .o .lo .sin .sed
+
+.c.o:
+	$(COMPILE) $<
+
+.y.c:
+	$(YACC) $(YFLAGS) --output $@ $<
+	rm -f $*.h
+
+bindtextdom.lo: $(srcdir)/bindtextdom.c
+	$(LIBTOOL) --mode=compile $(COMPILE) $(srcdir)/bindtextdom.c
+dcgettext.lo: $(srcdir)/dcgettext.c
+	$(LIBTOOL) --mode=compile $(COMPILE) $(srcdir)/dcgettext.c
+dgettext.lo: $(srcdir)/dgettext.c
+	$(LIBTOOL) --mode=compile $(COMPILE) $(srcdir)/dgettext.c
+gettext.lo: $(srcdir)/gettext.c
+	$(LIBTOOL) --mode=compile $(COMPILE) $(srcdir)/gettext.c
+finddomain.lo: $(srcdir)/finddomain.c
+	$(LIBTOOL) --mode=compile $(COMPILE) $(srcdir)/finddomain.c
+loadmsgcat.lo: $(srcdir)/loadmsgcat.c
+	$(LIBTOOL) --mode=compile $(COMPILE) $(srcdir)/loadmsgcat.c
+localealias.lo: $(srcdir)/localealias.c
+	$(LIBTOOL) --mode=compile $(COMPILE) $(srcdir)/localealias.c
+textdomain.lo: $(srcdir)/textdomain.c
+	$(LIBTOOL) --mode=compile $(COMPILE) $(srcdir)/textdomain.c
+l10nflist.lo: $(srcdir)/l10nflist.c
+	$(LIBTOOL) --mode=compile $(COMPILE) $(srcdir)/l10nflist.c
+explodename.lo: $(srcdir)/explodename.c
+	$(LIBTOOL) --mode=compile $(COMPILE) $(srcdir)/explodename.c
+dcigettext.lo: $(srcdir)/dcigettext.c
+	$(LIBTOOL) --mode=compile $(COMPILE) $(srcdir)/dcigettext.c
+dcngettext.lo: $(srcdir)/dcngettext.c
+	$(LIBTOOL) --mode=compile $(COMPILE) $(srcdir)/dcngettext.c
+dngettext.lo: $(srcdir)/dngettext.c
+	$(LIBTOOL) --mode=compile $(COMPILE) $(srcdir)/dngettext.c
+ngettext.lo: $(srcdir)/ngettext.c
+	$(LIBTOOL) --mode=compile $(COMPILE) $(srcdir)/ngettext.c
+plural.lo: $(srcdir)/plural.c
+	$(LIBTOOL) --mode=compile $(COMPILE) $(srcdir)/plural.c
+plural-exp.lo: $(srcdir)/plural-exp.c
+	$(LIBTOOL) --mode=compile $(COMPILE) $(srcdir)/plural-exp.c
+localcharset.lo: $(srcdir)/localcharset.c
+	$(LIBTOOL) --mode=compile $(COMPILE) $(srcdir)/localcharset.c
+relocatable.lo: $(srcdir)/relocatable.c
+	$(LIBTOOL) --mode=compile $(COMPILE) $(srcdir)/relocatable.c
+localename.lo: $(srcdir)/localename.c
+	$(LIBTOOL) --mode=compile $(COMPILE) $(srcdir)/localename.c
+log.lo: $(srcdir)/log.c
+	$(LIBTOOL) --mode=compile $(COMPILE) $(srcdir)/log.c
+printf.lo: $(srcdir)/printf.c
+	$(LIBTOOL) --mode=compile $(COMPILE) $(srcdir)/printf.c
+osdep.lo: $(srcdir)/osdep.c
+	$(LIBTOOL) --mode=compile $(COMPILE) $(srcdir)/osdep.c
+intl-compat.lo: $(srcdir)/intl-compat.c
+	$(LIBTOOL) --mode=compile $(COMPILE) $(srcdir)/intl-compat.c
+
+ref-add.sed: $(srcdir)/ref-add.sin
+	sed -e '/^#/d' -e 's/@''PACKAGE''@/@PACKAGE@/g' $(srcdir)/ref-add.sin > t-ref-add.sed
+	mv t-ref-add.sed ref-add.sed
+ref-del.sed: $(srcdir)/ref-del.sin
+	sed -e '/^#/d' -e 's/@''PACKAGE''@/@PACKAGE@/g' $(srcdir)/ref-del.sin > t-ref-del.sed
+	mv t-ref-del.sed ref-del.sed
+
+INCLUDES = -I. -I$(srcdir) -I..
+
+libgnuintl.h: $(srcdir)/libgnuintl.h.in
+	sed -e 's,@''HAVE_POSIX_PRINTF''@,@HAVE_POSIX_PRINTF@,g' \
+	    -e 's,@''HAVE_ASPRINTF''@,@HAVE_ASPRINTF@,g' \
+	    -e 's,@''HAVE_SNPRINTF''@,@HAVE_SNPRINTF@,g' \
+	    -e 's,@''HAVE_WPRINTF''@,@HAVE_WPRINTF@,g' \
+	  < $(srcdir)/libgnuintl.h.in > libgnuintl.h
+
+libintl.h: libgnuintl.h
+	cp libgnuintl.h libintl.h
+
+charset.alias: $(srcdir)/config.charset
+	$(SHELL) $(srcdir)/config.charset '@host@' > t-$@
+	mv t-$@ $@
+
+check: all
+
+# We must not install the libintl.h/libintl.a files if we are on a
+# system which has the GNU gettext() function in its C library or in a
+# separate library.
+# If you want to use the one which comes with this version of the
+# package, you have to use `configure --with-included-gettext'.
+install: install-exec install-data
+install-exec: all
+	if { test "$(PACKAGE)" = "gettext-runtime" || test "$(PACKAGE)" = "gettext-tools"; } \
+	   && test '@USE_INCLUDED_LIBINTL@' = yes; then \
+	  $(mkinstalldirs) $(DESTDIR)$(libdir) $(DESTDIR)$(includedir); \
+	  $(INSTALL_DATA) libintl.h $(DESTDIR)$(includedir)/libintl.h; \
+	  $(LIBTOOL) --mode=install \
+	    $(INSTALL_DATA) libintl.$la $(DESTDIR)$(libdir)/libintl.$la; \
+	  if test "@RELOCATABLE@" = yes; then \
+	    dependencies=`sed -n -e 's,^dependency_libs=\(.*\),\1,p' < $(DESTDIR)$(libdir)/libintl.la | sed -e "s,^',," -e "s,'\$$,,"`; \
+	    if test -n "$$dependencies"; then \
+	      rm -f $(DESTDIR)$(libdir)/libintl.la; \
+	    fi; \
+	  fi; \
+	else \
+	  : ; \
+	fi
+	if test "$(PACKAGE)" = "gettext-tools" \
+	   && test '@USE_INCLUDED_LIBINTL@' = no; then \
+	  $(mkinstalldirs) $(DESTDIR)$(libdir); \
+	  $(LIBTOOL) --mode=install \
+	    $(INSTALL_DATA) libgnuintl.$la $(DESTDIR)$(libdir)/libgnuintl.$la; \
+	  rm -f $(DESTDIR)$(libdir)/preloadable_libintl.so; \
+	  $(INSTALL_DATA) $(DESTDIR)$(libdir)/libgnuintl.so $(DESTDIR)$(libdir)/preloadable_libintl.so; \
+	  $(LIBTOOL) --mode=uninstall \
+	    rm -f $(DESTDIR)$(libdir)/libgnuintl.$la; \
+	else \
+	  : ; \
+	fi
+	if test '@USE_INCLUDED_LIBINTL@' = yes; then \
+	  test @GLIBC21@ != no || $(mkinstalldirs) $(DESTDIR)$(libdir); \
+	  temp=$(DESTDIR)$(libdir)/t-charset.alias; \
+	  dest=$(DESTDIR)$(libdir)/charset.alias; \
+	  if test -f $(DESTDIR)$(libdir)/charset.alias; then \
+	    orig=$(DESTDIR)$(libdir)/charset.alias; \
+	    sed -f ref-add.sed $$orig > $$temp; \
+	    $(INSTALL_DATA) $$temp $$dest; \
+	    rm -f $$temp; \
+	  else \
+	    if test @GLIBC21@ = no; then \
+	      orig=charset.alias; \
+	      sed -f ref-add.sed $$orig > $$temp; \
+	      $(INSTALL_DATA) $$temp $$dest; \
+	      rm -f $$temp; \
+	    fi; \
+	  fi; \
+	  $(mkinstalldirs) $(DESTDIR)$(localedir); \
+	  test -f $(DESTDIR)$(localedir)/locale.alias \
+	    && orig=$(DESTDIR)$(localedir)/locale.alias \
+	    || orig=$(srcdir)/locale.alias; \
+	  temp=$(DESTDIR)$(localedir)/t-locale.alias; \
+	  dest=$(DESTDIR)$(localedir)/locale.alias; \
+	  sed -f ref-add.sed $$orig > $$temp; \
+	  $(INSTALL_DATA) $$temp $$dest; \
+	  rm -f $$temp; \
+	else \
+	  : ; \
+	fi
+install-data: all
+	if test "$(PACKAGE)" = "gettext-tools"; then \
+	  $(mkinstalldirs) $(DESTDIR)$(gettextsrcdir); \
+	  $(INSTALL_DATA) VERSION $(DESTDIR)$(gettextsrcdir)/VERSION; \
+	  $(INSTALL_DATA) ChangeLog.inst $(DESTDIR)$(gettextsrcdir)/ChangeLog; \
+	  dists="COPYING.LIB-2.0 COPYING.LIB-2.1 $(DISTFILES.common)"; \
+	  for file in $$dists; do \
+	    $(INSTALL_DATA) $(srcdir)/$$file \
+			    $(DESTDIR)$(gettextsrcdir)/$$file; \
+	  done; \
+	  chmod a+x $(DESTDIR)$(gettextsrcdir)/config.charset; \
+	  dists="$(DISTFILES.generated)"; \
+	  for file in $$dists; do \
+	    if test -f $$file; then dir=.; else dir=$(srcdir); fi; \
+	    $(INSTALL_DATA) $$dir/$$file \
+			    $(DESTDIR)$(gettextsrcdir)/$$file; \
+	  done; \
+	  dists="$(DISTFILES.obsolete)"; \
+	  for file in $$dists; do \
+	    rm -f $(DESTDIR)$(gettextsrcdir)/$$file; \
+	  done; \
+	else \
+	  : ; \
+	fi
+
+install-strip: install
+
+installdirs:
+	if { test "$(PACKAGE)" = "gettext-runtime" || test "$(PACKAGE)" = "gettext-tools"; } \
+	   && test '@USE_INCLUDED_LIBINTL@' = yes; then \
+	  $(mkinstalldirs) $(DESTDIR)$(libdir) $(DESTDIR)$(includedir); \
+	else \
+	  : ; \
+	fi
+	if test "$(PACKAGE)" = "gettext-tools" \
+	   && test '@USE_INCLUDED_LIBINTL@' = no; then \
+	  $(mkinstalldirs) $(DESTDIR)$(libdir); \
+	else \
+	  : ; \
+	fi
+	if test '@USE_INCLUDED_LIBINTL@' = yes; then \
+	  test @GLIBC21@ != no || $(mkinstalldirs) $(DESTDIR)$(libdir); \
+	  $(mkinstalldirs) $(DESTDIR)$(localedir); \
+	else \
+	  : ; \
+	fi
+	if test "$(PACKAGE)" = "gettext-tools"; then \
+	  $(mkinstalldirs) $(DESTDIR)$(gettextsrcdir); \
+	else \
+	  : ; \
+	fi
+
+# Define this as empty until I found a useful application.
+installcheck:
+
+uninstall:
+	if { test "$(PACKAGE)" = "gettext-runtime" || test "$(PACKAGE)" = "gettext-tools"; } \
+	   && test '@USE_INCLUDED_LIBINTL@' = yes; then \
+	  rm -f $(DESTDIR)$(includedir)/libintl.h; \
+	  $(LIBTOOL) --mode=uninstall \
+	    rm -f $(DESTDIR)$(libdir)/libintl.$la; \
+	else \
+	  : ; \
+	fi
+	if test "$(PACKAGE)" = "gettext-tools" \
+	   && test '@USE_INCLUDED_LIBINTL@' = no; then \
+	  rm -f $(DESTDIR)$(libdir)/preloadable_libintl.so; \
+	else \
+	  : ; \
+	fi
+	if test '@USE_INCLUDED_LIBINTL@' = yes; then \
+	  if test -f $(DESTDIR)$(libdir)/charset.alias; then \
+	    temp=$(DESTDIR)$(libdir)/t-charset.alias; \
+	    dest=$(DESTDIR)$(libdir)/charset.alias; \
+	    sed -f ref-del.sed $$dest > $$temp; \
+	    if grep '^# Packages using this file: $$' $$temp > /dev/null; then \
+	      rm -f $$dest; \
+	    else \
+	      $(INSTALL_DATA) $$temp $$dest; \
+	    fi; \
+	    rm -f $$temp; \
+	  fi; \
+	  if test -f $(DESTDIR)$(localedir)/locale.alias; then \
+	    temp=$(DESTDIR)$(localedir)/t-locale.alias; \
+	    dest=$(DESTDIR)$(localedir)/locale.alias; \
+	    sed -f ref-del.sed $$dest > $$temp; \
+	    if grep '^# Packages using this file: $$' $$temp > /dev/null; then \
+	      rm -f $$dest; \
+	    else \
+	      $(INSTALL_DATA) $$temp $$dest; \
+	    fi; \
+	    rm -f $$temp; \
+	  fi; \
+	else \
+	  : ; \
+	fi
+	if test "$(PACKAGE)" = "gettext-tools"; then \
+	  for file in VERSION ChangeLog COPYING.LIB-2.0 COPYING.LIB-2.1 $(DISTFILES.common) $(DISTFILES.generated); do \
+	    rm -f $(DESTDIR)$(gettextsrcdir)/$$file; \
+	  done; \
+	else \
+	  : ; \
+	fi
+
+info dvi ps pdf html:
+
+$(OBJECTS): libgnuintl.h
+bindtextdom.$lo dcgettext.$lo dcigettext.$lo dcngettext.$lo dgettext.$lo dngettext.$lo finddomain.$lo gettext.$lo intl-compat.$lo loadmsgcat.$lo localealias.$lo ngettext.$lo textdomain.$lo: $(srcdir)/gettextP.h $(srcdir)/gmo.h $(srcdir)/loadinfo.h
+dcigettext.$lo loadmsgcat.$lo: $(srcdir)/hash-string.h
+explodename.$lo l10nflist.$lo: $(srcdir)/loadinfo.h
+dcigettext.$lo loadmsgcat.$lo plural.$lo plural-exp.$lo: $(srcdir)/plural-exp.h
+dcigettext.$lo: $(srcdir)/eval-plural.h
+localcharset.$lo: $(srcdir)/localcharset.h
+localealias.$lo localcharset.$lo relocatable.$lo: $(srcdir)/relocatable.h
+printf.$lo: $(srcdir)/printf-args.h $(srcdir)/printf-args.c $(srcdir)/printf-parse.h $(srcdir)/wprintf-parse.h $(srcdir)/xsize.h $(srcdir)/printf-parse.c $(srcdir)/vasnprintf.h $(srcdir)/vasnwprintf.h $(srcdir)/vasnprintf.c
+
+tags: TAGS
+
+TAGS: $(HEADERS) $(SOURCES)
+	here=`pwd`; cd $(srcdir) && etags -o $$here/TAGS $(HEADERS) $(SOURCES)
+
+ctags: CTAGS
+
+CTAGS: $(HEADERS) $(SOURCES)
+	here=`pwd`; cd $(srcdir) && ctags -o $$here/CTAGS $(HEADERS) $(SOURCES)
+
+id: ID
+
+ID: $(HEADERS) $(SOURCES)
+	here=`pwd`; cd $(srcdir) && mkid -f$$here/ID $(HEADERS) $(SOURCES)
+
+
+mostlyclean:
+	rm -f *.a *.la *.o *.obj *.lo core core.*
+	rm -f libgnuintl.h libintl.h charset.alias ref-add.sed ref-del.sed
+	rm -f -r .libs _libs
+
+clean: mostlyclean
+
+distclean: clean
+	rm -f Makefile ID TAGS
+	if test "$(PACKAGE)" = "gettext-runtime" || test "$(PACKAGE)" = "gettext-tools"; then \
+	  rm -f ChangeLog.inst $(DISTFILES.normal); \
+	else \
+	  : ; \
+	fi
+
+maintainer-clean: distclean
+	@echo "This command is intended for maintainers to use;"
+	@echo "it deletes files that may require special tools to rebuild."
+
+
+# GNU gettext needs not contain the file `VERSION' but contains some
+# other files which should not be distributed in other packages.
+distdir = ../$(PACKAGE)-$(VERSION)/$(subdir)
+dist distdir: Makefile
+	if test "$(PACKAGE)" = "gettext-tools"; then \
+	  : ; \
+	else \
+	  if test "$(PACKAGE)" = "gettext-runtime"; then \
+	    additional="$(DISTFILES.gettext)"; \
+	  else \
+	    additional="$(DISTFILES.normal)"; \
+	  fi; \
+	  $(MAKE) $(DISTFILES.common) $(DISTFILES.generated) $$additional; \
+	  for file in ChangeLog $(DISTFILES.common) $(DISTFILES.generated) $$additional; do \
+	    if test -f $$file; then dir=.; else dir=$(srcdir); fi; \
+	    cp -p $$dir/$$file $(distdir); \
+	  done; \
+	fi
+
+Makefile: $(srcdir)/Makefile.in $(top_builddir)/config.status
+	cd $(top_builddir) && $(SHELL) ./config.status
+# This would be more efficient, but doesn't work any more with autoconf-2.57,
+# when AC_CONFIG_FILES([intl/Makefile:somedir/Makefile.in]) is used.
+#	cd $(top_builddir) && CONFIG_FILES=$(subdir)/$@ CONFIG_HEADERS= $(SHELL) ./config.status
+
+# Tell versions [3.59,3.63) of GNU make not to export all variables.
+# Otherwise a system limit (for SysV at least) may be exceeded.
+.NOEXPORT: