Fixed bug in type-map processing which meant it was no longer ignoring

any initial line giving the URI of the negotiable resource. Also
stopping a Content-Type line on its own from being treated as a
variant with no name.


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/1.3.x@76918 13f79535-47bb-0310-9956-ffa450edef68