Initial Tomcat support
Fixed Tomcat classloader reloading
Added Tomcat logging configuration
Moved creation of Tomcat contexts to its own method
Added configuration for additional webappResources to Tomcat
Added an exception for Tomcat's lack of support for custom configuration
Added a class in the Tomcat runner to hold the tomcat instance and contexts

This is to make the connection between the tomcat instances and the servlet
contexts more explicit.  They should be updated together.
Merge branch 'tomcat' of git://github.com/cdow/xsbt-web-plugin into cdow-tomcat
add a scripted test for tomcat support