Enable fallback to copybit composition

- it doesn't break window animations any more

Change-Id: I4b4f824335ab7b693800ba9912838049a75c7f1a
Merge "Enable fallback to copybit composition" into cm-11.0
Merge branch 'cm-11.0' of https://github.com/CyanogenMod/android_device_motorola_moto_msm8960 into cd-4.4