In the initialization routines of oils_cstore.c: recoded a couple

In the initialization routines of oils_cstore.c: recoded a couple
of loops to use an osrfHashIterator, instead of creating an
osrfStringArray of keys and then traversing that.  This change
eliminates over 500 mallocs and frees.  In addition, traversing
the osrfHash with an iterator just hops along a linked list,
which is almost certainly faster than calculating a hash total
for every key.

git-svn-id: svn://svn.open-ils.org/ILS/trunk@13789 dcc99617-32d9-48b4-a31d-7c20da2025e4