Reduce dispatchCRUDMethod() to little more than a case structure,

Reduce dispatchCRUDMethod() to little more than a case structure,
which delegates all work to other functions (instead of doing some
of the work itself).  Besides making the code arguably tidier, this
change will make it easier to isolate much of the logic to a separate
module.

M    Open-ILS/src/c-apps/oils_cstore.c

git-svn-id: svn://svn.open-ils.org/ILS/trunk@16108 dcc99617-32d9-48b4-a31d-7c20da2025e4