rewrite midgardmvc_core_route class

[rambo]

the current one is a horrible mess of partial rewrites and refactorings and other organic development over a few years.

[bergie]

This should be done together with #16

[bergie]

While we're at it, the Midgard MVC route system should be implemented on top of Zeta Components:

http://incubator.apache.org/zetacomponents/documentation/trunk/MvcTools/tutorial.html#router