preloading gnustl_shared

src/org/libsdl/app/SDLActivity.java

@@ -46,6 +46,7 @@ public class SDLActivity extends Activity {
         //System.loadLibrary("SDL2_mixer");
         //System.loadLibrary("SDL2_net");
         //System.loadLibrary("SDL2_ttf");
+        System.loadLibrary("gnustl_shared");
         System.loadLibrary("love");
     }