merge "Fix up bu restore"
update to CWM 6.0.4.7
do not use performance mode during install zip:
fixes hang on unmount /system in updater-script when usb cable is connected
ROM Manager: workaround to fix backup/restore to/from external storage

ROM Manager can still use deprecated /external_sd (I suppose for devices without officially updated recoveries)
We work around this by pre-processing extendedcommand script before it is run