LOG4J2-392: bugfix: similar to stopping loggers in AbstractConfig.stop(), avoid starting the same AsyncLoggerConfig twice: this will mess up the ref count in AsyncLoggerConfigHelper

git-svn-id: https://svn.apache.org/repos/asf/logging/log4j/log4j2/trunk@1602666 13f79535-47bb-0310-9956-ffa450edef68
status logging improvement: print LoggerContext name in addition to classname@hashcode

git-svn-id: https://svn.apache.org/repos/asf/logging/log4j/log4j2/trunk@1602669 13f79535-47bb-0310-9956-ffa450edef68