* java/AndroidManifest.xml.in: Prevent the Emacs activity from
being overlayed by the emacsclient wrapper.
* java/org/gnu/emacs/EmacsOpenActivity.java (run): Likewise.
(onCreate): Set an appropriate theme on ICS and up.
* java/org/gnu/emacs/EmacsWindow.java (onTouchEvent): Handle
ACTION_CANCEL correctly.
