Bug 5987: Add cl scripts to touch all biblios and items

Bug 5987: Add cl scripts to touch all biblios and items

Add scripts that call ModBiblio and ModItem on all or some of the records in a
given catalog. For use when an upgrade changes the behavior of ModBiblio or
ModItem, and the change needs to be retroactively applied to records already in
the system. Usage is as follows:
misc/maintenance/touch_all_[biblios|items].pl [-v] [--where=STRING]

When invoked with a --where argument, the scripts will only modify those biblios
or items that match.

Signed-off-by: Ian Walls <ian.walls@bywatersolutions.com>
Signed-off-by: Chris Cormack <chrisc@catalyst.net.nz>