Acq: Towards a working lineitems + bibs search, but still not really there

Acq: Towards a working lineitems + bibs search, but still not really there

At least these things still need done:
    1) Need to find out how to combine search terms correctly for the
        open-ils.search multiclass method.
    2) Need either to find out how to negate multiclass search terms or
        to disable not- based searching for lineitem+bib
    3) Need to make uploaded file-of-terms work.

git-svn-id: svn://svn.open-ils.org/ILS/trunk@16365 dcc99617-32d9-48b4-a31d-7c20da2025e4