added ability to tag bib record results from staged multiclass search as previously...

added ability to tag bib record results from staged multiclass search as previously checked out by the user.  the code compares search results to the set of circs in the user's visible circulations history.  the ultimate goal is to provide the ability to style rows in search results so the patron can see if he/she already circulated the item (assuming some widget to turn this feature on/off for a search)

git-svn-id: svn://svn.open-ils.org/ILS/trunk@16854 dcc99617-32d9-48b4-a31d-7c20da2025e4