Add SimpleMenuXXX implementation for the Gingerbread platform.

1. Add a SimpleMenuInflator to parse the res/menu/xxx.xml files.
2. Add minimal code to show the menu.

This change is going to be replaced by the ActionBar compat library
when it gets ready and integrated. The purpose of this change is making
Gallery/Camera run on GB.

Change-Id: Ia7d402c82a6da1b9558ebbd103e161d2471b34dd
12 files changed