File Release Notes and Changelog

This patch is for PostgreSQL7.3.15  in order to create PGCluster-1.0.12rc1.
PGCluster-1.0.12rc1 is a synchronous replication system using PostgreSQL-7.3.15. And this is rc1 of 1.0.12.

This version is fixed dead lock determination bug and add following new function.
(1)-The queue which put the received query during recovery changed to file
from memory (message queue).
(2) Not only "rsync" but "pg_dump" can be chosen as the recovery method.
(This means that PGCluster is dynamically upgradable. )
When you want to recovery the cluster DB using pg_dump command, you can restart cluster DB with "-U" option.