pgsql: Add URL: < Right now only one encoding is allowed per

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

< Right now only one encoding is allowed per database.

Right now only one encoding is allowed per database. For a partial
patch, see http://archives.postgresql.org/pgsql-hackers/2005-03/msg00932.php.

Modified Files:
--------------
pgsql/doc:
TODO (r1.1839 -> r1.1840)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/TODO.diff?r1=1.1839&amp;r2=1.1840)
pgsql/doc/src/FAQ:
TODO.html (r1.342 -> r1.343)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/src/FAQ/TODO.html.diff?r1=1.342&amp;r2=1.343)