Raised the threshold for the test looking at view performance.

I guess if views are only 50x as slow on windows that's still
a lot better than 100,000.  (The real issue is more like
"it's windows" plus "it's windows running on virtualbox".)
No review.

git-svn-id: http://lampsvn.epfl.ch/svn-repos/scala/scala/trunk@24439 5e8d7ff9-d8ef-0310-90f0-a4852d11357a

Author: extempore

test/files/run/bug4279.scala

@@ -32,7 +32,7 @@ object Test {
     // warmup
     { val r = new Runner(1000000, 10) ; r.straightSlice ; r.iteratorSlice ; r.viewSlice }
 
-    new Runner(10000000, 10) run 10
-    new Runner(10000000, 50) run 10
+    new Runner(10000000, 10) run 50
+    new Runner(10000000, 50) run 50
   }
 }