[PATCH] restore -nostdlib for libgcc symbols tests

[Andrey Borzenkov <arvidjaar@gmail.com>]

> -static shouldn't create problems. Adding -nostdlib like I proposed
> should solve the problem.

Right, it was fallout of "plug the leakage" patch. I think below
patch is more aligned with the rest of code.

Commit 24f4e57c4684471da088c504dec0380886eece0c plugged leakage
of CFLAGS between individual tests, which broke test for libgcc
symbols. It needs -nostdlib which was set in previous test and
inherited before. Set it explicitly.

---
 configure.ac | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/configure.ac b/configure.ac
index 2c4f019..1842910 100644
--- a/configure.ac
+++ b/configure.ac
@@ -815,9 +815,9 @@ LIBS="$TARGET_LIBGCC"
 grub_ASM_USCORE
 if test "x$TARGET_APPLE_LINKER" = x0 ; then
 if test x$grub_cv_asm_uscore = xyes; then
-CFLAGS="$TARGET_CFLAGS -Wl,--defsym,_abort=_main"
+CFLAGS="$TARGET_CFLAGS -nostdlib -Wl,--defsym,_abort=_main"
 else
-CFLAGS="$TARGET_CFLAGS -Wl,--defsym,abort=main"
+CFLAGS="$TARGET_CFLAGS -nostdlib -Wl,--defsym,abort=main"
 fi
 fi
 
-- 
tg: (59ba9d1..) u/configure_nostdlib (depends on: master)