Add simple_remote.kl

Support for 3 buttons headphones
Thanks PolishVodka @XDA

Conflicts:
	common.mk

Change-Id: I1ca8bb6508ebca90eee059c42fec49a919dbf811
Revert : "Remove old BT workaround"
Support recoveries without CONFIG_EXT4_FS_XATTR

Now we are able to update to CM 11 from any ROM. Following this : https://github.com/CyanogenMod/android_bootable_recovery/commit/3a03519e7b40c7fc46e04dd380d51c483057c814
We don't need Set_metadata skipping anymore.
[libhealthd] Proper battery paths
Fix healthd typos
Fix libhealthd.montblanc building
Healthd fixes
Merge

Change-Id: Iee50f2e453aa48812aff6a969f1b1d0994b2487f