pgsql-server: Re-add: > * Remove unreferenced table files and temp

Log Message:
-----------
Re-add:

* Remove unreferenced table files and temp tables during database vacuum
or postmaster startup (Bruce)

Modified Files:
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pgsql-server/doc:
TODO (r1.1272 -> r1.1273)
(http://developer.postgresql.org/cvsweb.cgi/pgsql-server/doc/TODO.diff?r1=1.1272&r2=1.1273)