Add CK Bootanimation file to prebuilts. Not yet activated!!!

Change-Id: Ie288bce3f8fc28af46ef92b2d5ee4e460f3b679f
Update version in backuptool.functions too

Change-Id: Idbdf7ffbec037a78c2d3df4ca2a83c1058c19279
merge changes from CyanogenMod 10.2 into local branch