Option to show status bar in expanded desktop mode (2/2)

This commit allows the user to keep the status bar visible during expanded desktop mode.

Patch-set 1: clarify variable names.

Change-Id: Icb20971f8f86cb2ecf90f6226c1d5d18a60f5c84
Signed-off-by: Michael A. Alcorn <airalcorn2@gmail.com>

Conflicts:

	core/java/android/provider/Settings.java
	policy/src/com/android/internal/policy/impl/PhoneWindowManager.java