Passing arrays to Zend_Controller_Router

WARNING: The following contains unsanctioned HACKS to the Zend Framework. Use at your own discretion.

A big advantage to using the front controller in the Zend Framework is the ability to create nicely formatted urls. Instead of an ugly GET string we can pass parameters as slash delimited key -> value pairs. For example: can be replaced with
(On techfounder this is actually performed via mod_rewrite rules, but the principle is the same).

The implementation of the default router in the Zend Framework (Zend_Controller_Router_Rewrite) does not allow for passing arrays in this manner though, since previously set keys get overwritten if they are declared more than once. This is somewhere between semi-annoying to very annoying, so lets get straight to hacking it into submission.
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