Relax URL validation

[luissquall]

Strange enough YUI 3.1.1 seed makes the following request, appending an unnecessary & to the URL:

http://yui.yahooapis.com/combo?3.1.1/build/widget/assets/skins/sam/widget.css&3.1.1/build/widget/assets/skins/sam/widget-stack.css&3.1.1/build/overlay/assets/skins/sam/overlay.css&

Their service ignores the ampersand, even when it is inserted multiple times, and fulfils successfully the request.

Given this behaviour is part of Yahoo's service, would you be willing to relax the validation, perhaps by removing the following lines from combohandler.js:

        if (fileTypes.indexOf('') > -1) {
            // Most likely a malformed URL, which will just cause
            // an exception later. Short-cut to the inevitable conclusion.
            return next(new BadRequest('Truncated query parameters.'));
        }