Log Message:-----------sync some doc fixes from -stable
Modified Files:-------------- pgbouncer/doc: config.txt (r1.8 -> r1.9) (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pgbouncer/pgbouncer/doc/config.txt.diff?r1=1.8&r2=1.9) usage.txt (r1.4 -> r1.5) (http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pgbouncer/pgbouncer/doc/usage.txt.diff?r1=1.4&r2=1.5)