Parallel Rogue-like benchmark

[bearophile]

Your site counts 90 SLOC for the D entry, that comes from 83 
lines of code plus 7 comment lines. I think you shouldn't count 
the lines of comments, from all the entries.

If you want to count the comments too, then if you want I'll 
submit a 83 lines long D version without comments for your site, 
as in the Scala entry, for a little more fair comparison.

The Scala entry has lines of code like:

case (numLvls, threadNum) => {val rnd = new 
Xorshift32(rand.nextInt); if(!silent) println(s"Thread number 
$threadNum has seed " +  rnd.seed); numLvls -> rnd}

Bye,
bearophile