revert last commit. too unportable


git-svn-id: svn://svn.valgrind.org/valgrind/trunk@1675 a5019735-40e9-0310-863c-91ae7b9d1cf9
diff --git a/coregrind/vg_replace_malloc.c b/coregrind/vg_replace_malloc.c
index f1cde84..1d2de8b 100644
--- a/coregrind/vg_replace_malloc.c
+++ b/coregrind/vg_replace_malloc.c
@@ -180,7 +180,7 @@
 }
 
 /* gcc 3.X.X mangles them differently. */
-__attribute__((weak)) void* _Znwj ( Int n )
+void* _Znwj ( Int n )
 {
   return __builtin_new(n);
 }
@@ -205,7 +205,7 @@
 }
 
 /* gcc 3.X.X mangles them differently. */
-__attribute__((weak)) void* _Znaj ( Int n )
+void* _Znaj ( Int n )
 {
   return __builtin_vec_new(n);
 }