Updated to pybench 2.0.

See svn.python.org/external/pybench-2.0 for the original import of that
version.

Note that platform.py was not copied over from pybench-2.0 since
it is already part of Python 2.5.
diff --git a/Tools/pybench/Numbers.py b/Tools/pybench/Numbers.py
index a6aea33..10c8940 100644
--- a/Tools/pybench/Numbers.py
+++ b/Tools/pybench/Numbers.py
@@ -2,7 +2,7 @@
 
 class CompareIntegers(Test):
 
-    version = 0.1
+    version = 2.0
     operations = 30 * 5
     rounds = 120000
 
@@ -198,9 +198,9 @@
 
 class CompareFloats(Test):
 
-    version = 0.1
+    version = 2.0
     operations = 30 * 5
-    rounds = 60000
+    rounds = 80000
 
     def test(self):
 
@@ -394,7 +394,7 @@
 
 class CompareFloatsIntegers(Test):
 
-    version = 0.1
+    version = 2.0
     operations = 30 * 5
     rounds = 60000
 
@@ -590,9 +590,9 @@
 
 class CompareLongs(Test):
 
-    version = 0.1
+    version = 2.0
     operations = 30 * 5
-    rounds = 60000
+    rounds = 70000
 
     def test(self):