[mod_python] dot dot in the url

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I'm using modpython to provide a rest style api.  Unfortunately I am
experiencing a problem when there are ../ sequences as part of the url.
 For example if the path I service is /api/book/TITLE where title is the
title, I can't find anything that allows me to process the url when dots
are there.

An example is wanting to process /api/book/foo/../../bar

In my code I want /api/book/ handler invoked with "foo/../../bar" to be
the title.

Either Apache or modpython "normalizes" the url and treats the whole
thing as /api/bar.  I can't seem to stop that behaviour.  It happens
even if I use %2f/%2e.  I have AllowEncodedSlashes on as well.

I realize the whole thing looks like a directory traversal attack, but
it isn't and my code copes just fine when it is invoked.

Roger
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