base

* new screen resolution support impl.
  * use full window for activities, and shift & clip the content
  * refactored the compatibility code, and introdcued Translator class to handle cooridnate translations.
  * removed a workaround to handle an activity with configChagne=rotation in old implementation.
  * I'll fix background issue on rotation in next CL.

  * removed unnecessary scaling code in SurfaceView, which I forgot to remove when I changed SurfaceView
    not to scale the content.