Modify Mac packaging to accommodate VeNCrypt-enabled builds or other customizations;  Change build documentation accordingly


git-svn-id: svn://svn.code.sf.net/p/tigervnc/code/trunk@4265 3789f03b-4d11-0410-bbf8-ca57d06f2519
diff --git a/configure.ac b/configure.ac
index d13ecbd..80d36e3 100644
--- a/configure.ac
+++ b/configure.ac
@@ -223,6 +223,8 @@
 
 AC_SUBST(BUILD)
 
+AC_CONFIG_FILES([makemacpkg:release/makemacpkg.in])
+
 AC_OUTPUT([
 Makefile
 common/Makefile