Make it possible to build with GCC-4.6+ -O2 -flto.

* src/emacs.c (__malloc_initialize_hook): Mark as EXTERNALLY_VISIBLE.

src/ChangeLog

+2011-06-01  Dan Nicolaescu  <dann@ics.uci.edu>
+
+	Make it possible to build with GCC-4.6+ -O2 -flto.
+
+	* emacs.c (__malloc_initialize_hook): Mark as EXTERNALLY_VISIBLE.
+
 2011-06-01  Stefan Monnier  <monnier@iro.umontreal.ca>
 
 	* minibuf.c (get_minibuffer, read_minibuf_unwind):

src/emacs.c

@@ -678,7 +678,7 @@ malloc_initialize_hook (void)
     }
 }
 
-void (*__malloc_initialize_hook) (void) = malloc_initialize_hook;
+void (*__malloc_initialize_hook) (void) EXTERNALLY_VISIBLE = malloc_initialize_hook;
 
 #endif /* DOUG_LEA_MALLOC */