Log Message:-----------Document that btrim()'s second parameter is optional, and defaults to spaces.
Modified Files:-------------- pgsql/doc/src/sgml: func.sgml (r1.225 -> r1.226) (http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/func.sgml.diff?r1=1.225&r2=1.226)
