Prevent a HEAD request from being converted to a GET request on an

ErrorDocument redirect.  Also save a couple of cycles by not duping
a "GET" on top of a "GET" so the people who benchmark thousands of
ErrorDocument redirects should see a slight improvement now... ;)


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/1.3.x@85992 13f79535-47bb-0310-9956-ffa450edef68