vendor slim: add selinux changes

thanks to cm

Change-Id: Ieee9851be42d8d3451b5be64553bde9638539ca8
we do not build quicksearchbox so no remove needed

any more

Change-Id: Ib47459458b8db53f91d8253bc57fbb9a2b2c98dc
add a hook to add extra packages

Change-Id: I1f955a59a18bda22c4431d05a426aab91764d20d

Conflicts:
	config/common.mk
Update squisher to optimize priv-apps

Change-Id: I2f37b328594e7697dbebc9eca260c6bd11f52861
Merge "Update squisher to optimize priv-apps" into kk4.4
Merge branch 'kk4.4' of https://github.com/SlimRoms/vendor_slim into kk4.4