thodg/libgit2

2018-02-27T10:32:29

mingw: update TLS option flags Include the constants for `WINHTTP_FLAG_SECURE_PROTOCOL_TLS1_1` and `WINHTTP_FLAG_SECURE_PROTOCOL_TLS1_2` so that they can be used by mingw. This updates both the `deps/winhttp` framework (for classic mingw) and adds the defines for mingw64, which does not use that framework.