Merge branch 'ep/http-configure-ssl-version'

A new configuration variable http.sslVersion can be used to specify
what specific version of SSL/TLS to use to make a connection.

* ep/http-configure-ssl-version:
http: add support for specifying the SSL version

diff --cc Documentation/config.txt
Simple merge

diff --cc contrib/completion/git-completion.bash
Simple merge

diff --cc http.c
Simple merge