RQM 2.0 Beta 2 - Tomcat library for optimal performance

When starting RQM 2.0 Beta 2 the following content is printed to the DOS prompt:

Jun 7, 2009 8:26:39 PM org.apache.catalina.core.AprLifecycleListener lifecycleEvent
INFO: The Apache Tomcat Native library which allows optimal performance in production environments was not found on the java.library.path: C:\Program Files\IBM\RQM20\server\jre\bin;.;C:\Program Files\IBM\RationalSDLC\Clearquest\cqcli\bin;C:\WINDOWS\system32;C:\WINDOWS;C:\WINDOWS\System32\Wbem;C:\PROGRA~1\IBM\SQLLIB\BIN;C:\PROGRA~1\IBM\SQLLIB\FUNCTION;C:\PROGRA~1\IBM\SQLLIB\SAMPLES\REPL;C:\Program Files\Executive Software\Diskeeper\;C:\Program Files\IBM\RationalSDLC\common
Jun 7, 2009 8:26:40 PM org.apache.coyote.http11.Http11BaseProtocol init
INFO: Initializing Coyote HTTP/1.1 on http-9080
Jun 7, 2009 8:26:45 PM org.apache.coyote.http11.Http11BaseProtocol init
INFO: Initializing Coyote HTTP/1.1 on http-9443
Jun 7, 2009 8:26:45 PM org.apache.catalina.startup.Catalina load
INFO: Initialization processed in 8453 ms
Jun 7, 2009 8:26:45 PM org.apache.catalina.core.StandardService start
INFO: Starting service Catalina

Does anybody know the name of this Native library which allows for optimal performance?