AXIS2-5993: Fix TestKitLogManager

The code in that class got badly broken by the changes in AXIS2-5993:
- Log files are no longer closed.
- The appender writes to a StringWriter instead of the intended log
file, effectively blackholing log messages.
- The dependency on log4j-jcl is missing, causing log messages emitted
via commons-logging to be sent to java.util.logging instead of Log4j.
2 files changed