httpconnection: remove use of sslkwargs It now does nothing.

sslutil: move sslkwargs logic into internal function (API) As the previous commit documented, sslkwargs() doesn't add any value since its return is treated as a black box and proxied to wrapsocket(). We formalize its uselessness by moving its logic into a new, internal function and make sslkwargs() return an empty dict. The certificate arguments that sslkwargs specified have been removed from wrapsocket() because they should no longer be set.

sslutil: remove ui from sslkwargs (API) Arguments to sslutil.wrapsocket() are partially determined by calling sslutil.sslkwargs(). This function receives a ui and a hostname and determines what settings, if any, need to be applied when the socket is wrapped. Both the ui and hostname are passed into wrapsocket(). The other arguments to wrapsocket() provided by sslkwargs() (ca_certs and cert_reqs) are not looked at or modified anywhere outside of sslutil.py. So, sslkwargs() doesn't need to exist as a separate public API called before wrapsocket(). This commit starts the process of removing external consumers of sslkwargs() by removing the "ui" key/argument from its return. All callers now pass the ui argument explicitly.

dirstate: remove file from copymap on drop As the copymap is short-lived object regenerated from dirstate on each read this didn't affect us in any serious way. But since I've started working on permanent storage of copymap in my experiments with sqldirstate[1] I've seen this bug leaving the copy information in copymap after reverting the file moves and copies. [1] https://www.mercurial-scm.org/wiki/SQLDirstatePlan