magic_cmp, proper exit codes.
magic_cmp, proper exit codes.

print: use `printo` opcode.
print-string: use `prints` opcode.
cmp: reorder datatype to match -1,0,+1 order.
magic-cmp: expose the new magic_cmp function to all backends.
char=?: use eq?
string-length: all backends.
error: proper exit code.

samrushing/irken-compiler,samrushing/irken-compiler,samrushing/irken-compiler,samrushing/irken-compiler