pgsql: Add to TODO: > > * Allow xml arrays to be cast to other data

Log Message:
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Add to TODO:

* Allow xml arrays to be cast to other data types

http://archives.postgresql.org/pgsql-hackers/2007-09/msg00981.php
http://archives.postgresql.org/pgsql-hackers/2007-10/msg00231.php
http://archives.postgresql.org/pgsql-hackers/2007-11/msg00471.php

Modified Files:
--------------
pgsql/doc:
TODO (r1.2377 -> r1.2378)
(http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/doc/TODO?r1=1.2377&r2=1.2378)
pgsql/doc/src/FAQ:
TODO.html (r1.885 -> r1.886)
(http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/doc/src/FAQ/TODO.html?r1=1.885&r2=1.886)