Fix immersive mode & gl resize

- Pass raw width & height to internal C/C++ code, so that resizes propagate
- Fixes input button & image missalignment on 4.4+

shell/android/src/com/reicast/emulator/emu/GL2JNIView.java

@@ -564,7 +564,8 @@ public class GL2JNIView extends GLSurfaceView
 
 		public void onSurfaceChanged(GL10 gl,int width,int height)
 		{
-			JNIdc.rendinit(sWidth,sHeight);
+			gl.glViewport(0, 0, width, height);
+			JNIdc.rendinit(width,height);
 		}
 
 		public void onSurfaceCreated(GL10 gl,EGLConfig config)