Fixed offset issue with superblock read
fixed a bad assumption about strncmp()'s return
Changed the offsets to sectors, works in xtaffs_open() but segfaults. Also, took out tsk_vs_part_unused() call in xtaf.c
Changed sectors for last partition
Added in this malloc because of segfaulting, pretty sure it's not needed
Took out /512 and put back in
Added in return statement to stop segfaulting, it's not liking the xtaf fs type now