Log Message:
-----------
Return NULL instead of 0/0 in pg_last_xlog_receive_location() and
pg_last_xlog_replay_location(). Per Robert Haas's suggestion, after
Itagaki Takahiro pointed out an issue in the docs. Also, some wording
changes in the docs by me.
Modified Files:
--------------
pgsql/doc/src/sgml:
func.sgml (r1.517 -> r1.518)
(http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/func.sgml?r1=1.517&r2=1.518)
pgsql/src/backend/access/transam:
xlog.c (r1.419 -> r1.420)
(http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/src/backend/access/transam/xlog.c?r1=1.419&r2=1.420)