Merge branch 'lv/tls-1.3'

When built with more recent cURL, GIT_SSL_VERSION can now specify "tlsv1.3" as its value. * lv/tls-1.3: http: allow use of TLS 1.3

Junio C Hamano committed Apr 11, 2018 at 13:09 UTC 9b59d8869de2fdb63b1ac4cbd68c42b15bda2a19

No changes.