Re: merge YARV

wonderful, YARV is Ruby!

> Please check it and teach me the minimum set of error.
the benchmark doesn't work, here's the fix:

benchmark/run_rite.rb:
-  prog = File.read(file).map{|e| e.rstrip}.join("\n")
+  prog = File.read(file).lines.map{|e| e.rstrip}.join("\n")

So I "make benchmark":

Pentomino yields a strange error:
yarv./benchmark/bm_app_pentomino.rb:21:in `clone': can't modify array 
during iteration (RuntimeError)
         from ./benchmark/bm_app_pentomino.rb:21:in `block in piece'
         from ./benchmark/bm_app_pentomino.rb:16:in `each'
         from ./benchmark/bm_app_pentomino.rb:16:in `piece'
         from ./benchmark/bm_app_pentomino.rb:47:in `mkpieces'
         from ./benchmark/bm_app_pentomino.rb:126:in `<main>'

Exceptions seem to be slower then with the old interpreter. But 
everything else is much faster.

Thank you!
[murphy]