wireprotoserver: move protocol parsing and dispatch out of hgweb Previously, hgweb_mod had code for detecting if the request was for the wire protocol. It would then (eventually) call wireprotoserver.callhttp() to dispatch the request handling. Detection of wire protocol requests is not trivial. There's currently a big gotcha in the handling of the "cmd" request parameter, for example. Furthermore, in the near future we will have a second HTTP protocol handler. Its mechanism for calling commands will be a bit different. And we don't want the low-level logic for detecting protocol commands to live in hgweb. We establish a new function in wireprotoserver for detecting an HTTP protocol request and for giving the caller an easy-to-use mechanism for dispatching requests to it. Some wire protocol specific functionality still lives in hgweb. This will be addressed in subsequent commits. Differential Revision: https://phab.mercurial-scm.org/D2019