Log Message:
-----------
Allow Trace_lock_oidmin to be set to zero; this is a reasonable
representation of not wanting tracing to be limited by object OID.
Modified Files:
--------------
pgsql/src/backend/utils/misc:
guc.c (r1.252 -> r1.253)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/utils/misc/guc.c.diff?r1=1.252&r2=1.253)