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L{CGIScript} is a resource which runs child processes according to the CGI
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Do various things to conform to the CGI specification.
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Run the cgi script.
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more information about environments and process creation.
@type request: L{twisted.web.http.Request}
@param request: An HTTP request.
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the first argument of that script.
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Run a script through the C{filter} executable.
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for more information about environments and process creation.
@type request: L{twisted.web.http.Request}
@param request: An HTTP request.
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Record the end of the response generation for the request being
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