pgsql: Add: > * Allow INET + INT4/INT8 to increment the host part of

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

* Allow INET + INT4/INT8 to increment the host part of the address, or
throw an error

Modified Files:
--------------
pgsql/doc:
TODO (r1.1532 -> r1.1533)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/TODO.diff?r1=1.1532&r2=1.1533)
pgsql/doc/src/FAQ:
TODO.html (r1.39 -> r1.40)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/src/FAQ/TODO.html.diff?r1=1.39&r2=1.40)