Expired holds shelf printer needs to be a holds shelf *clearer* and printer

Expired holds shelf printer needs to be a holds shelf *clearer* and printer

This needs cleaned up and stuff, and made into something cooler.
Basically just does what XUL interfaces under the Circ menu can already do,
but streamlined to tolerate really big datasets.

Much of this code originates from berick and miker.

git-svn-id: svn://svn.open-ils.org/ILS/trunk@18230 dcc99617-32d9-48b4-a31d-7c20da2025e4