Add pg_basebackup -z option for compression with default level

Branch
------
master

Details
-------
http://git.postgresql.org/pg/commitdiff/6fa79755bd393cdfadb6197164cbe01498474be3

Modified Files
--------------
doc/src/sgml/ref/pg_basebackup.sgml   |   22 ++++++++++++++++++----
src/bin/pg_basebackup/pg_basebackup.c |   11 ++++++++++-
2 files changed, 28 insertions(+), 5 deletions(-)

pgsql-committers by date

Next:	From: Alvaro Herrera	Date: 2011-05-30 16:44:22
	Subject: pgsql: Make message more consistent
Previous:	From: Peter Eisentraut	Date: 2011-05-29 19:00:56
	Subject: pgsql: Correct description of log_connections and log_disconnections