Localization of SDL2.0 menu on macOS.

SDL2 initializes the macOS menu later than SDL1 (appears to be done
around the video initialization time), so we also need to call later our
routine to override the SDL menu with our localizable version.

src/tuxpaint.c

@@ -27329,10 +27329,6 @@ static void setup(void)
     }
 #endif
 
-#ifdef __APPLE__
-  apple_init();
-#endif
-
   im_init(&im_data, get_current_language());
 
 #ifndef NO_SDLPANGO
@@ -28473,6 +28469,10 @@ static void setup(void)
   signal(SIGUSR1, signal_handler);
   signal(SIGUSR2, signal_handler);
 #endif
+
+#ifdef __APPLE__
+  apple_init();
+#endif
 }
 
 /* ================================================================================== */