This is a pure snapshot of node-gyp with fixes to licensing and filenames.
The significant change is to deal with this issue in gyp: https://bugs.chromium.org/p/gyp/issues/detail?id=508
- do not use --generator-output to hide Makefiles in build subdirectory
- do not pass '-C build' to make process
With these changes, node-ninja is safe to use on native projects with dependencies, such as CZMQ, Zyre, etc.