* fix dumb missing variable assignment bug

This commit was SVN r6610.

config/ompi_check_gm.m4

@@ -19,6 +19,7 @@
 AC_DEFUN([_OMPI_CHECK_GM_CONFIG],[
     u_OMPI_CHECK_GM_CONFIG_SAVE_CPPFLAGS="$CPPFLAGS"
     u_OMPI_CHECK_GM_CONFIG_SAVE_LDFLAGS="$LDFLAGS"
+    u_OMPI_CHECK_GM_CONFIG_SAVE_LIBS="$LIBS"
 
     CPPFLAGS="$CPPFLAGS $$1_CPPFLAGS"
     LDFLAGS="$LDFLAGS $$1_LDFLAGS"