[PATCH v3 0/4] http: add support selecting http version

Normally, git doesn't need to set curl to select the HTTP version, it works fine without HTTP/2. Adding HTTP/2 support is a icing on the cake.

This patch support force enable HTTP/2 or HTTP/1.1. 

example: 

GIT_CURL_VERBOSE=1 git2 -c http.version=HTTP/2 ls-remote https://bitbucket.org/aquariusjay/deeplab-public-ver2.git

Force Charlie (4):
  http: add support selecting http version
  support force use http 1.1
  fix curl version to support CURL_HTTP_VERSION_2TLS
  http: change http.version value type

 http.c | 36 ++++++++++++++++++++++++++++++++++++
 1 file changed, 36 insertions(+)

base-commit: 8858448bb49332d353febc078ce4a3abcc962efe
Published-As: https://github.com/gitgitgadget/git/releases/tags/pr-69%2Ffcharlie%2Fmaster-v3
Fetch-It-Via: git fetch https://github.com/gitgitgadget/git pr-69/fcharlie/master-v3
Pull-Request: https://github.com/gitgitgadget/git/pull/69

Range-diff vs v2:

 1:  4f5a935c43 = 1:  4f5a935c43 http: add support selecting http version
 2:  06e9685d2b = 2:  06e9685d2b support force use http 1.1
 3:  eee67d8356 = 3:  eee67d8356 fix curl version to support CURL_HTTP_VERSION_2TLS
 -:  ---------- > 4:  ef975b6093 http: change http.version value type