ShortCutBar support

Change-Id: Ibcac1bf8c1810771f5a82395d434d0687406fb2e

Conflicts:

	packages/SystemUI/res/layout-land/status_bar_recent_panel.xml
	packages/SystemUI/res/layout-port/status_bar_recent_panel.xml
	packages/SystemUI/res/layout/status_bar_recent_panel.xml
	packages/SystemUI/src/com/android/systemui/recent/RecentsActivity.java
	packages/SystemUI/src/com/android/systemui/recent/RecentsPanelView.java