pgsql: Add warning about TODO item: < Currently all schemas are owned

Log Message:
-----------
Add warning about TODO item:

< Currently all schemas are owned by the super-user because they are
< copied from the template1 database.

Currently all schemas are owned by the super-user because they are copied
from the template1 database. However, since all objects are inherited
from the template database, it is not clear that setting schemas to the db
owner is correct.

Modified Files:
--------------
pgsql/doc:
TODO (r1.2168 -> r1.2169)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/TODO.diff?r1=1.2168&amp;r2=1.2169)
pgsql/doc/src/FAQ:
TODO.html (r1.669 -> r1.670)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/src/FAQ/TODO.html.diff?r1=1.669&amp;r2=1.670)