cherry picks in latest build: picked from r.cyanogenmod.com

[COMMON]
- telephony: Support for Incognito Mode (WIP)
- calendar: Incognito mode support
- contacts: Incognito mode support (WIP)

[FRAMEWORKS]
- Lockscreen : Fix widgets disabled
- Cleanup
- Add user switcher to lockscreen
- Re-implement orientation aware volume buttons at lower level
- Pie controls: Reduce observer footprint of PieController

[SETTINGS]
- Add lockscreen rotation as an optional rotation setting
- Run in Incognito Mode (WIP)
- User defined colours for pie controls
- Improve QS tiles config code

[APPS]
Camera:
- Camera: Add red-eye flash mode

Mms: 
- Add the ability to select recipients from a checkbox list

Trebuchet:
- Workspace and AppList Icon Tap/Touch

[Device]
Aries-common:
- Enhance liblights to support touchkey backlight
- releasetools: remove boot.img handling

Grouper:
- Adding ARM compiler flag optimizations
- use common linker script ld
- Enable option to optimize for grouper board


*** PSA ***
This is absolutely a WORK IN PROGRESS.
Please keep this in mind.
***********


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