f2fs: recreate /etc/fstab after ext4/f2fs conversion
this fixes use of system mount command
remove dead code
6.42.5
default to busybox tar:
- use busybox tar by default as it now supports selinux context backup/restore
- unify libtar and busybox tar options (-p for selinux context)
- remove now deprecated external selinux container code
6.42.7
Merge 6.42.7 release
nandroid: Re-enable nandroid reformat /system and /cache

Now format_volume() get actual fstype from device
Revert "updater: Add f2fs support, use system's mount"

This reverts commit 38d3b504225825e61b3c445c5ffa7d7bb0a06bd5.
updater: Add f2fs support