pgsql: Add: > > * Make it possible to use RETURNING together with

Log Message:
-----------
Add:

* Make it possible to use RETURNING together with conditional DO INSTEAD
rules, such as for partitioning setups

http://archives.postgresql.org/pgsql-hackers/2007-09/msg00577.php

Modified Files:
--------------
pgsql/doc:
TODO (r1.2213 -> r1.2214)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/TODO?r1=1.2213&r2=1.2214)
pgsql/doc/src/FAQ:
TODO.html (r1.722 -> r1.723)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/src/FAQ/TODO.html?r1=1.722&r2=1.723)