base

Fix accessibility for all-caps items in keyguard

This fixes a bug where TTS on all-caps items doesn't work for
Buttons.  The fix is to use translation (ala. TextView.setAllCaps()),
which just affects rendering and not the original text string.

Fix bug 10912259

Change-Id: Id8cba927819c979fe699353219d45f8b0f9f5aac