This reverts commit 131546e7.

Doesn't work on windows, coming back soon.

Conflicts:
	src/node.cc
	src/node.js

Still missing on fs.WriteStream

add some tests.

Conflicts:
	src/node_net.cc
	src/node_os.cc

Before:
> {a: 1}
1
> (function() {
...   // foo
...   return 1;
... })();
...

Now:
> {a: 1}
{ a : 1 }
> (function() {
...   // foo
...   return 1;
... })();
1
>

Stub out new platform functions.

This reverts commit 24aded07.

Fixes GH-543