upstream: http://groups.google.com/group/vim_dev/browse_thread/thread/5685c3b859e3c793# 
status: reported upstream
--- vim72-orig/src/configure.in	2010-09-29 19:13:33.000000000 +0200
+++ vim72/src/configure.in	2010-09-29 19:17:07.000000000 +0200
@@ -35,10 +35,10 @@
 fi
 if test "$GCC" = yes; then
   dnl method that should work for nearly all versions
-  gccversion=`"$CC" -dumpversion`
+  gccversion=`$CC -dumpversion`
   if test "x$gccversion" = "x"; then
     dnl old method; fall-back for when -dumpversion doesn't work
-    gccversion=`"$CC" --version | sed -e '2,$d' -e 's/darwin.//' -e 's/^[[^0-9]]*\([[0-9]]\.[[0-9.]]*\).*$/\1/g'`
+    gccversion=`$CC --version | sed -e '2,$d' -e 's/darwin.//' -e 's/^[[^0-9]]*\([[0-9]]\.[[0-9.]]*\).*$/\1/g'`
   fi
   dnl version 4.0.1 was reported to cause trouble on Macintosh by Marcin Dalecki
   if test "$gccversion" = "3.0.1" -o "$gccversion" = "3.0.2" -o "$gccversion" = "4.0.1"; then