tomcat6 needs debug start mode with jpda

Bits and pieces here from different sources but it all describes the prob.

tomcat 6:
 dpkg -l | grep tomcat6
ii libtomcat6-java 6.0.18-0ubuntu6 Servlet and JSP engine -- core libraries
ii tomcat6 6.0.18-0ubuntu6 Servlet and JSP engine
ii tomcat6-admin 6.0.18-0ubuntu6 Servlet and JSP engine -- admin web applications
ii tomcat6-common 6.0.18-0ubuntu6 Servlet and JSP engine -- common files
ii tomcat6-user 6.0.18-0ubuntu6 Servlet and JSP engine -- tools to create user instances

I've installed the stock tomcat6 package on Intrepid, and I want to configure it for remote JPDA debugging (listening on port 8000) for debugging a webapp from eclipse. The normal way to do this is to edit /usr/share/tomcat6/bin/startup.sh so it starts in debug mode:

exec "$PRGDIR"/"$EXECUTABLE" jpda start "$@"

However, the Ubuntu system startup script doesn't seem to follow the normal tomcat6 startup procedure. /etc/init.d/tomcat6 runs /usr/bin/jsvc instead of executing the normal startup scripts in /usr/share/tomcat6/bin:

DAEMON=/usr/bin/jsvc
.
.
.
$DAEMON -user "$TOMCAT6_USER" -cp "$JSVC_CLASSPATH" \
-outfile SYSLOG -errfile SYSLOG \
-pidfile "$CATALINA_PID" $JAVA_OPTS "$BOOTSTRAP_CLASS"

How should I configure it to start the debugger?

The fix is to apply the enclosed patch, or something like it.