As I'm such a Mono whore, I just had to try compiling this on Mono. Unfortunately, the developers don't expect you to be compiling this under Mono on Windows, thus you have no build solution. Attached is my attempt to compile IronAHK by hand. It is untested. If anyone knows the devs, please ask them to rectify this oversight, or if you manage to build IronAHK from the makefile on windows successfully, please let me know how. Also please let me know if my build is rooted (easily possible) and I'll try to see what went wrong.
Ehtyar.