Fixed status of response when POST is received for a nonexistant URL

(was sending 405, now 404) and when any method is sent with a
full-URI that doesn't match the server and the server is not acting
as a proxy (was sending 501, now 403).

Reviewed by: Chuck Murcko, Dean Gaudet


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/1.3.x@77781 13f79535-47bb-0310-9956-ffa450edef68