Use PRODUCT_BOOTANIMATION instead of COPY_FILES

Change-Id: I10f6db5687ba2a3724a00b94bc7592dbd6405b82

Conflicts:
	config/common.mk
Merge branch 'jb3' of https://github.com/LiquidSmooth/android_vendor_liquid into jb3
Merge branch 'jb3' of https://github.com/jsnweitzel/android_vendor_liquid into jb3