Log Message:
-----------
Add a HINT per suggestion from Michael Glaesemann. Also, tweak OLD/NEW
test to avoid expensive contain_vars_of_level() scan in the normal case
where we're not inside a rule.
Modified Files:
--------------
pgsql/src/backend/parser:
analyze.c (r1.341 -> r1.342)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/parser/analyze.c.diff?r1=1.341&r2=1.342)