Packaging RequireJS Dependencies

RequireJS is used normally (dependencies loaded individually) in development.
Flipping the RJS_OPTIMIZATION_ENABLED bit and running r.js (before compress)
will result in all dependencies being bundled and downloaded together.

@rocha @dsjen @andy-armstrong
It depends on the license and whether the fact that we provide the un-minified source in our repos complies with the license. Regardless, the few extra bytes of license info won't kill our bandwidth budget, so I'll restore the info just in case the license(s) require the comments be maintained.