Change cctests to use variant flags as part of the name for the serilization file.

tools/test.py

Index: tools/test.py
===================================================================
--- tools/test.py	(revision 7276)
+++ tools/test.py	(working copy)
@@ -614,7 +614,7 @@
 
   def AddTestsToList(self, result, current_path, path, context, mode):
     for v in VARIANT_FLAGS:
-      tests = self.GetConfiguration(context).ListTests(current_path, path, mode)
+      tests = self.GetConfiguration(context).ListTests(current_path, path, mode, v)
       for t in tests: t.variant_flags = v
       result += tests
 
@@ -637,7 +637,7 @@
         result += test.GetBuildRequirements(rest, context)
     return result
 
-  def ListTests(self, current_path, path, context, mode):
+  def ListTests(self, current_path, path, context, mode, variant_flags):
     (name, rest) = CarCdr(path)
     result = [ ]
     for test in self.tests:
@@ -1419,7 +1419,7 @@
         'simulator': options.simulator,
         'crankshaft': options.crankshaft
       }
-      test_list = root.ListTests([], path, context, mode)
+      test_list = root.ListTests([], path, context, mode, [])
       unclassified_tests += test_list
       (cases, unused_rules, all_outcomes) = config.ClassifyTests(test_list, env)
       if globally_unused_rules is None: