Log Message:
-----------
Allow empty queries.
Mostly rearrange the code around some qlist !=/== NIL checks.
Modified Files:
--------------
be/src:
query.c (r1.22 -> r1.23)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/python/be/src/query.c.diff?r1=1.22&r2=1.23)