Add "import thread" at the top of the module; this prevents us from

failing later when Python is compiled without threading but a failing
'threading' module can be imported due to an earlier (caught) attempt.

Lib/test/test_asynchat.py

@@ -1,5 +1,6 @@
 # test asynchat -- requires threading
 
+import thread # If this fails, we can't test this module
 import asyncore, asynchat, socket, threading, time
 
 HOST = "127.0.0.1"

Lib/test/test_threadedtempfile.py

@@ -20,6 +20,7 @@ via cmdline switches:
 NUM_THREADS = 20        # change w/ -t option
 FILES_PER_THREAD = 50   # change w/ -f option
 
+import thread # If this fails, we can't test this module
 import threading
 from test_support import TestFailed
 import StringIO