Tenderloin:  Update to Kitkat

Updated libsensor
Added a few tags
  USE_SET_METADATA
  TARGET_RUNNING_WITHOUT_SYNC_FRAMEWORK
Updated Sdcard mounting
Updated WIFI
Added in Overlay for Launcher3

Change-Id: I0add54cab2ba5a10abd8034a3faa54ebbb09a815

Conflicts:
	BoardConfig.mk
set setlinux permissive
Enable low ram device flag

http://source.android.com/devices/low-ram.html#flag

Change-Id: Ic79e6a350db43d7933b29a3cf6fb98c22a9de547
update for new HALs

* specify legacy media variant - framework looks for this but this
  flag does not actually determine the media hal to be built
* use legacy audio flag - this is needed for the new, rebased audio-caf

Change-Id: I405e96bbae841e856cbeeba4a5eba5a432a01407