add simple loop bench

fiddled with run numbers a bit
recording times with noop removed
results slightly worse than hoped

test/bench/rubyx/adds.rb

@@ -14,12 +14,12 @@ class Space
     return result
   end
 
-  # ran with --parfait=40000
+  # ran with --parfait=80000
   def main(arg)
     b = 1000
     while( b >= 1 )
       b = b - 1
-      fibo_i(20)
+      fibo_i(40)
     end
     return b
   end

test/bench/rubyx/calls.rb

@@ -5,8 +5,8 @@ class Space
        return n
      end
      a = fibo_r(n - 1)
-     d = fibo_r(n - 2)
-     return a + d
+     b = fibo_r(n - 2)
+     return a + b
   end
 
   # ran with --parfait=70000

test/bench/rubyx/hello.rb

@@ -1,6 +1,5 @@
 class Space
   # ran with --parfait=25000
-  # time - noop * 10 + noop
   def main(arg)
     b = 10000
     while( b >= 1 )

test/bench/rubyx/loop.rb

@@ -0,0 +1,11 @@
+class Space
+
+  # ran with --parfait=101000
+  def main(arg)
+    b = 100000
+    while( b >= 1 )
+      b = b - 1
+    end
+    return b
+  end
+end