Kill App on Long-Press Back Key (framework)

Change-Id: Ib78fff9e32d95a0a112ddd9274b79b3a3aa626b9

Conflicts:

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

Long press to kill

Bring changes done in cm7 to ics.
- Vibrate on press
- Show message
- http://review.cyanogenmod.com/#change,5191,patchset=2

Change-Id: Ib1e5eba50cef5d72d81b733f87ac39c09d4212de

Long-press back kill app cleanup

Change-Id: Ida791dca1fbfdc2beccf6ff727b67df56f1956a4

framework: customizable kill app via back key timeout

Allows the time it takes for the back key to kill an app
to be customized via overlay.

Change-Id: Iaa43f81ee448ae7a7663254a830011a0bca5e60f

Conflicts:

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

Change-Id: Ida791dca1fbfdc2beccf6ff727b67df56f1956a4