This patch fixes TFO->release_cmd() and removes legacy pack_lun() usage
and new_cmd_failure when generating new TCM fabric skeleton from the
tcm_mod_builder.py script.
Reported-by: NStefan Bergstrand <stefan.bergstrand@sdsab.se>
Signed-off-by: NNicholas Bellinger <nab@linux-iscsi.org>