block version of loop

no debugging, just worked!
only about 10% slower, nice
also recording qemu-linux times, which are a lot faster(and double bonus, save the startup/syncing)

test/mains/source/times_11111_5.rb

@@ -0,0 +1,15 @@
+class Space
+  def times(n)
+    i = 0
+    while( i < n )
+      yield
+      i = i + 1
+    end
+    return n
+  end
+  def main(arg)
+    return times(5) {
+      "1".putstring
+    }
+  end
+end