Make sure a MIME-type can be forced via a RewriteRule even when no

substitution takes place, for instance via the following rule:

     RewriteRule ^myscript$ - [T=application/x-httpd-cgi]

This was often requested by users (not only the submitter of the bug report)
in the past to force a single script without a .cgi extension and outside any
cgi-bin dirs to be executed as a CGI program.

PR: 2254


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/1.3.x@81340 13f79535-47bb-0310-9956-ffa450edef68