Update Android port

Update Android port

* doc/emacs/android.texi (Android Windowing): Remove yet another
limitation.
* java/debug.sh: Make this work on systems which prohibit
attaching to app processes from adbd.
* java/org/gnu/emacs/EmacsCopyArea.java (perform): Avoid
creating copies whenever possible.
* java/org/gnu/emacs/EmacsSurfaceView.java (EmacsSurfaceView):
Remove SurfaceView based implementation and use manual double
buffering with invalidate instead.
* java/org/gnu/emacs/EmacsView.java (EmacsView, handleDirtyBitmap)
(raise, lower, onDetachedFromWindow): Adjust accordingly.
* java/org/gnu/emacs/EmacsWindow.java (windowUpdated): Remove
function.
* src/sfntfont.c (sfntfont_open): Set font->max_width correctly.