Disable JreMemoryLeakPreventionListener's driverManagerProtection as its "SEVERE … memory leak …" message can be misleading to users.
It is misleading in our case as we never stop a webapp without restarting the whole JVM.
Remove `AprLifecycleListener` as we don't want to use APR connector. This will remove the noisy warning message:
"May 23, 2013 11:01:07 PM org.apache.catalina.core.AprLifecycleListener init
INFO: The APR based Apache Tomcat Native library which allows optimal performance in production environments was not found on the java.library …"
Upgrade to tomcat 7.0.40.
Fix CVE-2013-2071
Merge pull request #13 from cyrille-leclerc/master

minor enhancements and fixes