Pie: Add option to change pie's angle from the attach 2/2

Conflicts:

	core/java/android/provider/Settings.java

Fixed the commit for PAC

Change-Id: Ic1ef6cbe50edcc978cad69c282a6bbb7388153b3
Merge branch 'cm-10.1' of https://github.com/PAC-man/android_frameworks_base into shooter