buildtools support mingw
Merge branch 'master' into refs/top-bases/t/3rdTools/curl
Merge commit 'refs/top-bases/t/3rdTools/openssl' into t/3rdTools/openssl
Merge branch 't/3rdTools/openssl' into refs/top-bases/t/3rdTools/curl
Merge commit 'refs/top-bases/t/3rdTools/c-ares' into t/3rdTools/c-ares
Merge branch 't/3rdTools/c-ares' into refs/top-bases/t/3rdTools/curl
Merge commit 'refs/top-bases/t/3rdTools/curl' into t/3rdTools/curl