Added LoggerDOMConfigurator APPENDER-REF element as an APPENDER_REF alias. Various changes to obtain PHP5 compatibility (not fully tested). Fixed LoggerDOMConfigurator CONFIGURATOR element's namespace handling (Sergio Strampelli). Fixed AppenderSkeleton::setThreshold() threshold assignment (Sergio Strampelli). Fixed LoggerAppenderMail::close() mail() 'to' param. Fixed remoteHostname and port param