1. Support negation of an expression (except in a few cases where it

1. Support negation of an expression (except in a few cases where it
doesn't make sense, such as negation of a number or string).

2. Support HAVING clauses.  This isn't useful yet because we don't
support GROUP BY yet.

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@16399 dcc99617-32d9-48b4-a31d-7c20da2025e4