Minor JavaDoc fix.
Add check to environment variable during property expansion if the key name begins with "env.".
[LOGMGR-87] Use the NDC value from the ExtLogRecord in the PatternFormatter.
[LOGMGR-111] Optionally check the parent class loader for a log context if the log context was not found.
[LOGMGR-104] Use better encoding methods for the syslog handler.