Comment 7 for bug 874296

I've forced-pushed a new branch to http://git.evergreen-ils.org/?p=working/Evergreen.git;a=shortlog;h=refs/heads/user/dbs/array_accum_2_array_agg that signs off on bshum's additional commit, as well as includes a commit of my own to revert the "create new custom array_agg()" change :)