Add -t option to allow easy test selection.
Action verbose option correctly.
Tweak operation counts. Add empty and new instances tests.
Enable comparisons across different warp factors. Change version.
diff --git a/Tools/pybench/Arithmetic.py b/Tools/pybench/Arithmetic.py
index 4ed6219..229396c 100644
--- a/Tools/pybench/Arithmetic.py
+++ b/Tools/pybench/Arithmetic.py
@@ -4,7 +4,7 @@
 
     version = 0.3
     operations = 5 * (3 + 5 + 5 + 3 + 3 + 3)
-    rounds = 120000
+    rounds = 1200*21
 
     def test(self):
 
@@ -159,7 +159,7 @@
 
     version = 0.3
     operations = 5 * (3 + 5 + 5 + 3 + 3 + 3)
-    rounds = 100000
+    rounds = 1000*30
 
     def test(self):
 
@@ -314,7 +314,7 @@
 
     version = 0.3
     operations = 5 * (3 + 5 + 5 + 3 + 3 + 3)
-    rounds = 120000
+    rounds = 1200*30
 
     def test(self):
 
@@ -470,7 +470,7 @@
 
     version = 0.3
     operations = 5 * (3 + 5 + 5 + 3 + 3 + 3)
-    rounds = 30000
+    rounds = 300*32
 
     def test(self):
 
@@ -625,7 +625,7 @@
 
     version = 0.3
     operations = 5 * (3 + 5 + 5 + 3 + 3 + 3)
-    rounds = 40000
+    rounds = 400*27
 
     def test(self):