buildtools support mingw
Merge branch 'master' into refs/top-bases/t/3rdTools/zlib
Merge commit 'refs/top-bases/t/3rdTools/zlib' into t/3rdTools/zlib
Merge branch 't/3rdTools/zlib' into refs/top-bases/t/3rdTools/freetype
Merge commit 'refs/top-bases/t/3rdTools/bz2' into t/3rdTools/bz2
Merge branch 't/3rdTools/bz2' into refs/top-bases/t/3rdTools/freetype
Merge commit 'refs/top-bases/t/3rdTools/freetype' into t/3rdTools/freetype