up some other stuff (removed multiple application support because it was
pointless). Moved some general purpose things into servlet.util (still
need to modify the WebMacro version of the framework to use the general
purpose versions).
git-svn-id: https://samskivert.googlecode.com/svn/trunk@397 6335cc39-0255-0410-8fd6-9bcaacd3b74c