Not stable enough.
- Windows snapshot linking broken
- Linux crash on ./node_g test/simple/test-stream-pipe-multi.js
This reverts commit 56e6952e639ba1557a5b22333788583e9e39fa29.
There are serious performance regressions both in V8 and our own legacy
networking stack. Until we correct our own problems we are going back to the
old V8.
