pgsql: Prevent WAL logging when COPY is done in the same transation that

Log Message:
-----------
Prevent WAL logging when COPY is done in the same transation that
created it.

Simon Riggs

Modified Files:
--------------
pgsql/doc/src/sgml:
perform.sgml (r1.59 -> r1.60)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/perform.sgml.diff?r1=1.59&r2=1.60)
pgsql/src/backend/access/heap:
heapam.c (r1.224 -> r1.225)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/access/heap/heapam.c.diff?r1=1.224&r2=1.225)
tuptoaster.c (r1.68 -> r1.69)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/access/heap/tuptoaster.c.diff?r1=1.68&r2=1.69)
pgsql/src/backend/catalog:
index.c (r1.276 -> r1.277)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/catalog/index.c.diff?r1=1.276&r2=1.277)
pgsql/src/backend/commands:
copy.c (r1.274 -> r1.275)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/commands/copy.c.diff?r1=1.274&r2=1.275)
pgsql/src/backend/executor:
execMain.c (r1.283 -> r1.284)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/executor/execMain.c.diff?r1=1.283&r2=1.284)
pgsql/src/backend/utils/cache:
relcache.c (r1.254 -> r1.255)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/utils/cache/relcache.c.diff?r1=1.254&r2=1.255)
pgsql/src/include/access:
heapam.h (r1.119 -> r1.120)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/include/access/heapam.h.diff?r1=1.119&r2=1.120)
tuptoaster.h (r1.29 -> r1.30)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/include/access/tuptoaster.h.diff?r1=1.29&r2=1.30)
pgsql/src/include/utils:
rel.h (r1.95 -> r1.96)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/include/utils/rel.h.diff?r1=1.95&r2=1.96)