revert use of libtar
  * there is a bug when restoring /data on some devices
resurrect RECOVERY_NEED_SELINUX_FIX into BOARD_RECOVERY_USE_BBTAR
 * if we drop to busybox tar, this will enable backup/restore of selinux context using @xiaolu patch
6.30.1
libtar: improve debug logging
default to gnu tar format
    * fix command options for tar format (posix vs gnu)
Default to libtar for backup/restore
6.30.2
Merge branch 'cm-11.0' of github.com:PhilZ-cwm6/philz_touch_cwm6 into cm-11.0

Merged changes from upstream