Programming interface sorted

I think I've finally got the programming interface done, both for the device and programmer. All set up and ready to go.

The translator to get the two to talk will be a complex bit of code. For the moment I'm going to stub it with something simple to get a prototype working. Then I'll write the support DLLs for the PIC16F877 and ProPIC2 programmer, and at that point I'll finally have something that messes with voltages, which will be a great milestone for the project!

The full horror that is the auto-configuration/detection system can happen after that, when there are two known-working DLLs to hook up to. That's going to be a seriously hard bit of code, so I'd rather start from a working baseline on that.