Support recoveries without CONFIG_EXT4_FS_XATTR

If for some reason the recovery's kernel can't be replaced and has
no support for xattrs, use this. Chances are the system will break
unless you know what you're doing and compensate on the Android side

Change-Id: I09ff2cbd0ae68ec4f4b2a2e26acb6b0bc8b3569a
Merge remote-tracking branch 'upstream/cm-11.0' into cm-11.0