Enable parallel checkout by default to --jobs=8 and smoke tests.

gclient_utils.py

Index: gclient_utils.py
diff --git a/gclient_utils.py b/gclient_utils.py
index d8bbf023ee1a0b6f57bf8d585df07d6545a180da..4c8edb6bfa84f47cd3bd95278461a29fcbcf0023 100644
--- a/gclient_utils.py
+++ b/gclient_utils.py
@@ -595,9 +595,9 @@ class ExecutionQueue(object):
         t.kwargs['options'].stdout.full_flush()
         if self.progress:
           self.progress.update(1)
-        assert not t.name in self.ran
-        if not t.name in self.ran:
-          self.ran.append(t.name)
+        assert not t.item.name in self.ran
+        if not t.item.name in self.ran:
+          self.ran.append(t.item.name)
 
   def _run_one_task(self, task_item, args, kwargs):
     if self.jobs > 1: