main: Don't call g_type_init from meta_init

For the plugin system, GType has to have been initialized by now.

https://bugzilla.gnome.org/show_bug.cgi?id=676855

src/core/main.c

@@ -381,8 +381,6 @@ meta_init (void)
   struct sigaction act;
   sigset_t empty_mask;
   GIOChannel *channel;
-
-  g_type_init ();
   
   sigemptyset (&empty_mask);
   act.sa_handler = SIG_IGN;

src/core/mutter.c

@@ -69,6 +69,8 @@ main (int argc, char **argv)
   GOptionContext *ctx;
   GError *error = NULL;
 
+  g_type_init ();
+
   ctx = meta_get_option_context ();
   g_option_context_add_main_entries (ctx, mutter_options, GETTEXT_PACKAGE);
   if (!g_option_context_parse (ctx, &argc, &argv, &error))