For Windows, add delay after killing BuildLogger job object

The new way of killing mongod.exe for smokeJs apparently doesn't
wait for all child processes to exit, so cleanbb.py would fail to
delete files: "WindowsError: [Error 32] The process cannot access
the file because it is being used by another process:".  Sleep for
5 seconds after terminating the job object to let the processes die.

buildscripts/smoke.py

@@ -246,6 +246,9 @@ def stop(self):
             if os.sys.platform == "win32":
                 import win32job
                 win32job.TerminateJobObject(self.job_object, -1)
+                import time
+                # Windows doesn't seem to kill the process immediately, so give it some time to die
+                time.sleep(5) 
             else:
                 # This function not available in Python 2.5
                 self.proc.terminate()