Conditionall call g_type_init() after a version check

There's no need to call g_type_init() since GLib 2.36, so let's hide it
when building against newer versions of GLib.

libnotify/notify.c

@@ -153,7 +153,9 @@ notify_init (const char *app_name)
 
         notify_set_app_name (app_name);
 
+#if !GLIB_CHECK_VERSION (2, 36, 0)
         g_type_init ();
+#endif
 
         _initted = TRUE;
 

tests/test-error.c

@@ -29,7 +29,9 @@ main ()
 {
         NotifyNotification *n;
 
+#if !GLIB_CHECK_VERSION (2, 36, 0)
         g_type_init ();
+#endif
 
         notify_init ("Error Handling");
 

tests/test-replace.c

@@ -28,7 +28,9 @@ main ()
         GError             *error;
         error = NULL;
 
+#if !GLIB_CHECK_VERSION (2, 36, 0)
         g_type_init ();
+#endif
 
         notify_init ("Replace Test");
 

tools/notify-send.c

@@ -173,7 +173,9 @@ main (int argc, char *argv[])
 
         setlocale (LC_ALL, "");
 
+#if !GLIB_CHECK_VERSION (2, 36, 0)
         g_type_init ();
+#endif
 
         g_set_prgname (argv[0]);
         g_log_set_always_fatal (G_LOG_LEVEL_ERROR | G_LOG_LEVEL_CRITICAL);