update to 4.6.27 (multi)
also use ApkTool 2.0.0-Beta8
Merge branch 'upstream'

Conflicts:
	res/values/styles.xml
	smali/com/android/gallery3d/app/AbstractGalleryActivity.smali
	smali/com/android/gallery3d/app/PhotoPage.smali
revert to old ApkTool
Merge branch 'upstream'

Conflicts:
	res/values/styles.xml
fix preference theme