1. Add support for function calls. Note that certain functions have

1. Add support for function calls.  Note that certain functions have
peculiar calling syntax.  They will require special handling as exceptions,
and are not yet supported.

2. Add a bit of sanity checking for numeric and string literal expressions.

3. Eliminate the function_id member of Expression.

M    Open-ILS/include/openils/oils_buildq.h
M    Open-ILS/src/c-apps/oils_storedq.c
M    Open-ILS/src/c-apps/buildSQL.c

git-svn-id: svn://svn.open-ils.org/ILS/trunk@16537 dcc99617-32d9-48b4-a31d-7c20da2025e4