Umm... No it isn't... It's illegal to share the exe and dll files used to crack the game. Although, it was legal to make an exe that showed your coords in the bottom corner...
So, no... It isn't illegal, that's what billions of people do when they share modded main.scm's for download.
I was referring to the original SCM file when I said that.
Even if it is legal (and I'm sure it isn't) to share the original SCM file, TGTAP wouldn't allow it, as the original could be used to complete the missing parts (if any) of a No-CD crack.