rewrite in style of AIT/primes.lam
move Z after O
remove proc.awk, use gcc as the preprocessor instead
rewrite to use C macro
use C macro syntax instead of custom one
use C macro syntax instead of custom one
use C macro syntax instead of custom one
use C macro syntax instead of custom one
use C macro syntax instead of custom one
use C macro syntax instead of custom one
use C macro syntax instead of custom one