url: support client certificate files over HTTPS (issue643)...
url: support client certificate files over HTTPS (issue643)
This extends the httpshandler with the means to utilise the auth
section to provide it with a PEM encoded certificate key file and
certificate chain file. This works also with sites that both require
client certificate authentication and basic or digest password
authentication, although the latter situation may require the user to
enter the PEM password multiple times.
