camera: add power mode support

Based on commit 7036d66bec7697160ba1b2e255f1e7fae0c8c435 from CAF,
branch ics_chocolate.

Change-Id: I8a60668b18980fd5e6f9dd341db5a8a63deb99d0
Camera: add ISO mode support

Change-Id: Ied2075f950269990d836fc768b2c6c36088d494f
Camera : Powerkey shutter (1/2)

Allows user to take use power key to take pictures/videos

Change-Id: I85a1e1761199f4604672be42a3a5005227f5451a
Add config_speed_up_audio_on_mt_calls option

Bug: 7612431
Change-Id: Ia2758f81b78a2576df8dd23c700dba3eaaef8efc

Conflicts:
	core/res/res/values/config.xml
	core/res/res/values/symbols.xml
Properly handle changes in phone audio focus.

Change-Id: I921651684f4369a47aa83e93010266c40be71a41
Merge remote-tracking branch 'aokp/jb-mr1' into jb-mr1
Merge branch 'jb-mr1' into HEAD