WIP: CWM recovery fstab features.

Change-Id: Ibb4c910ab7f3c377a8f358214d58357c40d5811a

Conflicts:
	fs_mgr/include/fs_mgr.h
Merge branch '4.4.1-caf-rebase' of https://github.com/IllusionRom/platform_system_core into 4.4.1-caf-rebase