Log Message:
-----------
Fix failure to apply domain constraints to a NULL constant that's added to
an INSERT target list during rule rewriting.  Per report from John Supplee.
Tags:
----
REL7_3_STABLE
Modified Files:
--------------
    pgsql/src/backend/rewrite:
        rewriteManip.c (r1.67.2.1 -> r1.67.2.2)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/rewrite/rewriteManip.c.diff?r1=1.67.2.1&r2=1.67.2.2)