add PA Lightbulb overlay for app and core.

fix torch bug.
Enable Battery LED settings
Merge pull request #1 from AndyLamYL/kitkat

"Add PA Lightbulb overlay for app and core" and "Enable Battery LED settings"
dependencies: Track some of our external repos for strict aliasing fix
Merge remote-tracking branch 'PA/kitkat' into kitkat-legacy

Conflicts:
	overlay/frameworks/base/core/res/res/values/pa_config.xml
	overlay/packages/apps/Lightbulb/res/values/config.xml