Should Jetty samples pre-req Jetty and Tomcat samples pre-req Tomcat?
This was initially the case. However, this was changed so that the plugins could be installed in a framework server without the jetty or tomcat prereq being present (the integration tests in trunk currently require this). There was opposition to restoring the defaults because it was thought a common mechnism to run the samples would be in the *-jetty/target directories.