node http code change could have major effect on express

In node, commit nodejs/node@a899576c that landed yesterday can have major problems for express if someone does use the IncomingMessage option.

On line 31 of request https://github.com/expressjs/express/blob/master/lib/request.js#L31 express references http.IncomingMessage.prototype to extend it with all the express functionality.

If someone changes the http IncomingMessage class and doesn't extend IncomingMessage then the reqs will not have any of express functions.

Not sure why someone would, but they have the option to replicate the whole class without having to extend the real one.

I haven't tested this yet (I will need to learn how to build node).. but I wanted to give everyone the heads up.