libgit2/libgit2 — pull request #2589 by csware (2014-09-27 16:18:28+00:00)
Title: WinHTTP: Try to detect and use system configured proxy

If not proxy is configured in git config, try to detect WinHTTP and current user (IE) default proxy.

Web Proxy Auto-Discovery (WPAD) protocol not supported so far as it required deeper changes.