pgsql: Add URL for: * Fix problem when multiple subtransactions of the

Log Message:
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Add URL for:

* Fix problem when multiple subtransactions of the same outer transaction
hold different types of locks, and one subtransaction aborts

http://archives.postgresql.org/pgsql-hackers/2007-05/msg00773.php

Modified Files:
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pgsql/doc:
TODO (r1.2293 -> r1.2294)
(http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/doc/TODO?r1=1.2293&r2=1.2294)
pgsql/doc/src/FAQ:
TODO.html (r1.802 -> r1.803)
(http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/doc/src/FAQ/TODO.html?r1=1.802&r2=1.803)