Обсуждение: pgsql: Clarify note about interaction of log_statement logging with

Log Message:
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Clarify note about interaction of log_statement logging with errors.
Remove obsolete note about logging of statements generated by plpgsql
function execution ... that doesn't happen anymore.

Modified Files:
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    pgsql/doc/src/sgml:
        config.sgml (r1.90 -> r1.91)
        (http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/config.sgml.diff?r1=1.90&r2=1.91)