Convert sunaudio.py to bytes.  (It has no unit test of its own!)
Fix test_ossaudiodev by closing the dsp properly (it can't be opened
multiple times on my box).
diff --git a/Lib/test/test_ossaudiodev.py b/Lib/test/test_ossaudiodev.py
index eb15e88..0cdc93c 100644
--- a/Lib/test/test_ossaudiodev.py
+++ b/Lib/test/test_ossaudiodev.py
@@ -170,6 +170,7 @@
                            errno.ENODEV, errno.EBUSY):
             raise TestSkipped(msg)
         raise
+    dsp.close()
     test_support.run_unittest(__name__)
 
 if __name__ == "__main__":