Console and timers

Node.js and Chromium each has its own implementation of setTimeout and console. Currently, for console, we use Chromium's implementation everywhere, because it can print in devtools and have more information exposed.

As for setTimeout family, we just keep things as they are. In webpages setTimeout will call window.setTimeout, i.e. the WebKit's implementation. In node modules setTimeout will call global.setTimeout, i.e. the node's implementation. In this way, we can make sure those low level hacks on timers will still work in node-webkit.

And please note that since we have implemented renderer's message loop in libuv, node's implementation of timers will be more accurate than WebKit's. So if you're doing something that needs accurate clock, please use global.setTimeout.