Add required libraries to list.

Change-Id: Ice466de2bddd6050335978d70f31831f4d428576
Merge "Add required libraries to list." into cm-10.2
Make "one confirm" the default action.  Create .many_confirm to restore
all the extra no options.

Change-Id: I1362815b18f4f1aeecb7426689f38bf8f1f1f008
recovery: nandroid: implement preference for backup_format

ro.cwm.prefer.backup_format takes:
dup (dedupe)
tgz (tar + gzip)
(i.e. setprop ro.cwm.prefer.backup_format tgz)

-If nothing is specified or the above is not matched then tar is used.
-If the user specifies a default_backup_format then that is used.

Change-Id: I935d6cc732c5ef2b1d0d44f5459425e85702e710