Long press recents to switch to last app

Change-Id: I8c52a7b40d4229d523bccc1c9246673b82f5b48b
Conflicts:
	core/java/android/provider/Settings.java
	packages/SystemUI/res/values/pa_strings.xml
	packages/SystemUI/src/com/android/systemui/statusbar/BaseStatusBar.java
	packages/SystemUI/src/com/android/systemui/statusbar/phone/PhoneStatusBar.java
Delete trash file

Change-Id: I7d96145fd7743da82e7cd988deb06f1189b3da21