CL_AS_NOEXECSTACK assumes grep understands -q

[Albert Chin]

Solaris grep doesn't understand -q, used in CL_AS_NOEXECSTACK by
m4/noexecstack.m4 for libgcrypt-1.4.3.

Patch attached.

-- 
albert chin (china at thewrittenword.com)
-------------- next part --------------
Index: m4/noexecstack.m4
===================================================================
--- m4/noexecstack.m4.orig	2008-10-17 18:26:32.809072183 +0000
+++ m4/noexecstack.m4	2008-10-17 18:26:35.014143443 +0000
@@ -37,7 +37,7 @@
 EOF
   if AC_TRY_COMMAND([${CC} $CFLAGS $CPPFLAGS
                      -S -o conftest.s conftest.c >/dev/null]) \
-     && grep -q .note.GNU-stack conftest.s \
+     && grep .note.GNU-stack conftest.s >/dev/null \
      && AC_TRY_COMMAND([${CCAS} $CCASFLAGS $CPPFLAGS -Wa,--noexecstack
                        -c -o conftest.o conftest.s >/dev/null])
   then