End apr_natstrcasecmp, backporting part of r216111 (there may remain other apr_natstrcasecmp abuse in other files). Still unsure if apr_strnatcasecmp of the hostname is deliberate to handle leading 0's in ip addresses, so leaving that single use case.
httpd/httpd/branches/proxy-reqbody-2.0.x/modules/proxy/proxy_http.c