Comment 5 for bug 1525394

There is an additional commit that I neglected to upload to the initial branch. Here's a rebased version that contains all 3: https://git.evergreen-ils.org/?p=working/Evergreen.git;a=shortlog;h=refs/heads/user/jboyer/lp1525394_more_sip_hold_titles_2 / working/user/jboyer/lp1525394_more_sip_hold_titles_2

I'd like some more eyes on it and some additional testing if possible. My by-hand testing looked ok with msg64_hold_items_available set to barcode or not, but I'm not using anything fancier than telnet here.