* handles NaN and Infinity
* works with arrays from other contexts

Now that process.version doesn't say if the build is debug or not.

The V8 upgrade changed the stacktrace reports (?)

Add NODE_MODULE_CONTEXTS env var

Only one test was modified to check that this works. NEED to go through all
tests and modify them so that

  NODE_MODULE_CONTEXTS=1 make test

passes.

Support setTTL() and setBroadcast() socket options.

from node.cc, so we can convert fs to a module.