pgsql: Remove pg_attribute detail, add URL < pg_attribute.attislocal

Log Message:
-----------
Remove pg_attribute detail, add URL

< pg_attribute.attislocal has to be set to 'false' for ADD, and
< pg_attribute.attinhcount adjusted appropriately

See http://archives.postgresql.org/pgsql-hackers/2006-05/msg00988.php.

Modified Files:
--------------
pgsql/doc:
TODO (r1.1826 -> r1.1827)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/TODO.diff?r1=1.1826&amp;r2=1.1827)
pgsql/doc/src/FAQ:
TODO.html (r1.329 -> r1.330)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/src/FAQ/TODO.html.diff?r1=1.329&amp;r2=1.330)