lambola

Copperbox revision 3102.

I've moved the IDL code (parser, syntax, pretty printer) into the Lambola namespace, if I think Lambola (eventually) merits a release I don't think the IDL code will ever be canonical enough to merit the Language.IDL namespace.

Also, I've started work on a Happy parser. This should be more robust than the current Parsec parser as the IDL grammar specification is already in LR form. Ideally I would have carried on with yesterday's work on IDL-to-Haskell translation, but I'm not sure of the status of libraries for Haskell quasiquoting on Hackage. Quasiquoting will need some investigation and I was concerned it might have interfered with my intention for "a commit a day".