This also makes recent GCC shut up about indexing below the bounds as
it detected the code checked for a negative index yet didn't guard the
actual access. For now GCC doesn't understand the more comprehensive
check, but it might come back if GCC becomes smart enough.
Anyway, this makes the Assert() more correct, and addition of the
explicit kinds array size makes sure any future kind addition won't
miss its entry.
Rust now allows CRLF line endings in source files, which doesn't actually
change any lexing here but the comment was wrong.
Also, the hashbang initial comment has a special case where #
