AOKP custom system animations (1/2)

Ported from here: http://gerrit.aokp.co/#/c/12304/

Thanks to Steve Spear

Change-Id: I38bc7b83edaff3c455f0dfe3ea5ede54a20ae07c

Conflicts:
	core/java/android/provider/Settings.java
	core/res/res/values/symbols.xml