This is Apache Tomcat 6.x, supporting Servlet 2.5 and JSP 2.1.
The Glassfish JSP 2.1 bundled in Jetty 6 is way too old.

Retrieved from the file
	apache-tomcat-6.0.36-deployer.tar.gz

minus the following files and directores:

build.xml
deployer-howto.html
images/*
lib/catalina*
LICENSE (see ../../../licenses/LICENSE-Apache2.0.txt, it's also inside every jar)
RELEASE-NOTES