Username is always fixed thanks to LOG4NET-205

git-svn-id: https://svn.apache.org/repos/asf/logging/log4net/trunk@1511765 13f79535-47bb-0310-9956-ffa450edef68
make PatternLayoutTest independent of reflection implementation

git-svn-id: https://svn.apache.org/repos/asf/logging/log4net/trunk@1511766 13f79535-47bb-0310-9956-ffa450edef68
merge fixed tests

git-svn-id: https://svn.apache.org/repos/asf/logging/log4net/branches/1.2.12@1511769 13f79535-47bb-0310-9956-ffa450edef68