Added version_check.sh
version_check.sh almost done
Updated dev_scripts to install version_check.sh
Tell /bin/live-update-initramfs not to touch the initramfs image
Purge live-tools during uninstall
Block update-grub from running in the RAM Session
Changed code that blocks update-grub
Added XFS support to chroot check
Added code to handle not finding anything holding up unmounting
Made script make backup of update-grub before changing it
Moved 'block update-grub' code to only apply to RAM_Session
Removed all the extra code from 'Block update-grub' section

I originally meant to have that section modify /usr/sbin/update-grub
instead of $DEST/usr/sbin/update-grub. Once I changed this, it became
unnecessary to keep a backup, since uninstall happens automatically when
/var/squashfs is deleted
Modified grub-update message
Added 'exit 1' to rupdate Ctrl+C trap so it actually exits
Added newline to rupdate's trap so it looks nicer when it exits
Merge branch 'Grub' into rewrite