b0c39a1ad38e1b56d8f51c2a9b8193f34a107d82

pre-alpha nightly release at b0c39a1 for macOS.

1. Unarchive the zip file.
2. Put executable and runtime directory together in the same directory.
3. Execute the binary.

Clang (contained in XCode toolchain) and 'bdwgc' library (available as Homebrew pacakge) are required as runtime dependencies.