* mod_proxy_http2: ressurrecting some of the good parts of r1831231 and using...

 * mod_proxy_http2: ressurrecting some of the good parts of r1831231 and using memcpy instead of strncpy to make intentions more clear


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@1832937 13f79535-47bb-0310-9956-ffa450edef68