Log Message:
-----------
Change get_rule_expr so that when the input is a List, it displays the
list elements comma-separated instead of barfing. This allows elimination
of half a dozen redundant copies of that behavior, and also makes the
world safe again for pg_get_expr() applied to pg_index.indexprs, per gripe
from Alexander Zhiltsov.
Modified Files:
--------------
pgsql-server/src/backend/utils/adt:
ruleutils.c (r1.181 -> r1.182)
(http://developer.postgresql.org/cvsweb.cgi/pgsql-server/src/backend/utils/adt/ruleutils.c.diff?r1=1.181&r2=1.182)