Thread: pgsql: Improve the recently-added code for inlining set-returning

Log Message:
-----------
Improve the recently-added code for inlining set-returning functions so that
it can handle functions returning setof record.  The case was left undone
originally, but it turns out to be simple to fix.

Modified Files:
--------------
    pgsql/src/backend/optimizer/prep:
        prepjointree.c (r1.55 -> r1.56)
        (http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/src/backend/optimizer/prep/prepjointree.c?r1=1.55&r2=1.56)
    pgsql/src/backend/optimizer/util:
        clauses.c (r1.268 -> r1.269)
        (http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/src/backend/optimizer/util/clauses.c?r1=1.268&r2=1.269)
    pgsql/src/include/optimizer:
        clauses.h (r1.94 -> r1.95)
        (http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/src/include/optimizer/clauses.h?r1=1.94&r2=1.95)