Frameworks - Make NavBar hide [1/2]

Needs Jubakuba's RC commit to bring back the NavBar
controls in the power dialog.

Change-Id: I970bae38a2ae859d9f364d3d14cdb9b5e5183624
Signed-off-by: Zaphod <mwilson@acesappraisal.com>

Conflicts:

	policy/src/com/android/internal/policy/impl/PhoneWindowManager.java