[2/2] Left handed navbar during landscape mode

This patch allows for the navbar to be moved to the left side of the
screen during landscape mode. Left handed people are more used to this
option.

This patch must go with another patch that changes
packages/apps/Settings

Screenshot: http://i.imgur.com/jWqJcEV.png

Change-Id: Ic95e3fda1f55efd2ec908c8d7226e638ec0ab80a

Conflicts:
	policy/src/com/android/internal/policy/impl/PhoneWindowManager.java
BootMessage: Show each app name being optimized during boot

Below the message that says "Optimizing app x of y" the name of
the current app is displayed. This is the same as we had for kitkat.

Change-Id: I6a52c1991ec4dfa20fb501b2b26b2b6d3fa093d7
Bootmsg: The app name is now displayed in bold text.

Change-Id: I5e37527e3b00ef3889a029c707b54a514c7f0a22