revert to using libtar for nandroid operations
optional debug code: backup /data selinux context to external container
6.42.9
nandroid backup: fix 'media' exception:

In CWM, a bug present from the begining was preventing any path/file named media from backup on /data/media devices
This fix will only exclude /data/media path and not other media files/folders
6.43.0
Merge 6.43.0 release