dryice bundling

Make it so that dryice can be turned into a single .js file with its dependencies built-in. This can use the mini-require.js that is currently in Ace. The idea here is that we can have a dryice tool that just requires nodejs and nothing more to run. (With a small amount of work, it may be possible to make a dryice tool that works on either Rhino or Node! but that's for another day)
