pgsql: Add URLs for : * Speed WAL recovery by allowing more than one

Log Message:
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Add URLs for :

* Speed WAL recovery by allowing more than one page to be prefetched

  This involves having a separate process that can be told which pages
  the recovery process will need in the near future.

>   http://archives.postgresql.org/pgsql-general/2007-12/msg00683.php
>   http://archives.postgresql.org/pgsql-hackers/2007-12/msg00497.php
<

Modified Files:
--------------
    pgsql/doc:
        TODO (r1.2345 -> r1.2346)
        (http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/doc/TODO?r1=1.2345&r2=1.2346)
    pgsql/doc/src/FAQ:
        TODO.html (r1.853 -> r1.854)
        (http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/doc/src/FAQ/TODO.html?r1=1.853&r2=1.854)