Review of IE 11, Firefox 48 and Chrome 53 all indicate that ';' URI characters

are transmitted unencoded, per RFC3986 section 3.3 grammer. Correct httpd's
behavior to not encode ';' in proxied URI's or Location: response headers.



git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@1760444 13f79535-47bb-0310-9956-ffa450edef68