Added lypanov to the THANKS file
Big ol' commit! Lots of fun stuff in here: 1. Added the THANKS file. Everyone who donates money/time to rubinius goes in it. 2. Fixed up the runtime even more so that the compiler works! It's crashing on some things, but getting close! 3. Added ivar_as_index, which lets the compiler know how to map ivar access to fields in self. Makes the code A TON more readable.