Expose ap_method_register() to the admin with a new RegisterHttpMethod

directive.
Backports: r1407599
Submitted by: sf


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x-merge-http-strict@1767942 13f79535-47bb-0310-9956-ffa450edef68