[Zope] Missing mime-types

[marc lindahl]

What about the issue of, a Product developer makes a product designed to
deal with some new mimetype... proper operation depends on recognition of
this mimetype.  Should content_types.py expose the interface to globally add
a new type? 

> From: "Andreas Jung" <andreas@digicool.com>
>
>there should be some
> additional support in the mimetypes module to specify user-defined
> mime.types file (env.var or any other mechanism). But it makes
> few sense to maintain the mime-types at at-least three different
> locations (Zope, Python, local mime.types files).