pgsql: Update for roles: < * Allow limits on per-db/user connections >

Log Message:
-----------
Update for roles:

< * Allow limits on per-db/user connections
> * Allow limits on per-db/role connections
< * Prevent default re-use of sysids for dropped users and roles
<
< Currently, if a user is removed while he still owns objects, a new
< user given might be given their user id and inherit the
< previous users objects.
<
450c444
< * Add COMMENT ON for all cluster global objects (users, roles, databases
> * Add COMMENT ON for all cluster global objects (roles, databases
609c603
< users and roles with separate DROP commands
> roles with separate DROP commands

Modified Files:
--------------
pgsql/doc:
TODO (r1.1584 -> r1.1585)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/TODO.diff?r1=1.1584&r2=1.1585)
pgsql/doc/src/FAQ:
TODO.html (r1.91 -> r1.92)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/src/FAQ/TODO.html.diff?r1=1.91&r2=1.92)