Log Message:
-----------
Give most recovery conflict errors a retryable error code. From recent
requests and discussions with Yeb Havinga and Kevin Grittner.
Modified Files:
--------------
pgsql/src/backend/tcop:
postgres.c (r1.593 -> r1.594)
(http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/src/backend/tcop/postgres.c?r1=1.593&r2=1.594)