pgsql: Add: > * Force archiving of partially-full WAL files when

Log Message:
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Add:

* Force archiving of partially-full WAL files when pg_stop_backup() is
called or the server is stopped

Modified Files:
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pgsql/doc:
TODO (r1.1489 -> r1.1490)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/TODO.diff?r1=1.1489&r2=1.1490)