pgsql: Link to summary XML email, rather than thread top: < * Consider

Log Message:
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Link to summary XML email, rather than thread top:

< * Consider changing documentation from SGML to XML

* Consider changing documentation format from SGML to XML

< http://archives.postgresql.org/pgsql-docs/2006-12/msg00033.php

http://archives.postgresql.org/pgsql-docs/2006-12/msg00152.php

Modified Files:
--------------
pgsql/doc:
TODO (r1.2015 -> r1.2016)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/TODO.diff?r1=1.2015&amp;r2=1.2016)
pgsql/doc/src/FAQ:
TODO.html (r1.517 -> r1.518)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/src/FAQ/TODO.html.diff?r1=1.517&amp;r2=1.518)