patch 9.0.0928: using Ruby LDFLAGS may cause build problems

Problem:    Using Ruby LDFLAGS may cause build problems.
Solution:   Do not add Ruby LDFLAGS to Vim's LDFLAGS. (Zdenek Dohnal,
            closes #11592)
diff --git a/src/configure.ac b/src/configure.ac
index 16ecd10..a5beb83 100644
--- a/src/configure.ac
+++ b/src/configure.ac
@@ -2034,18 +2034,10 @@
 	if test "X$librubyarg" != "X"; then
 	  RUBY_LIBS="$librubyarg $RUBY_LIBS"
 	fi
-	rubyldflags=`$vi_cv_path_ruby -r rbconfig -e "print $ruby_rbconfig::CONFIG[['LDFLAGS']]"`
-	if test "X$rubyldflags" != "X"; then
-	  dnl Ruby on Mac OS X 10.5 adds "-arch" flags but these should only
-	  dnl be included if requested by passing --with-mac-arch to
-	  dnl configure, so strip these flags first (if present)
-	  rubyldflags=`echo "$rubyldflags" | sed -e 's/-arch\ ppc//' -e 's/-arch\ i386//' -e 's/-arch\ x86_64//'`
-	  if test "X$rubyldflags" != "X"; then
-	    if test "X`echo \"$LDFLAGS\" | $FGREP -e \"$rubyldflags\"`" = "X"; then
-	      LDFLAGS="$rubyldflags $LDFLAGS"
-	    fi
-	  fi
-	fi
+
+	dnl Here the Ruby LDFLAGS used to be added to LDFLAGS, but that turns
+	dnl out to cause trouble and was removed.
+
 	RUBY_SRC="if_ruby.c"
 	RUBY_OBJ="objects/if_ruby.o"
 	RUBY_PRO="if_ruby.pro"