Make this test work when imported from the interpreter instead of run

from regrtest.py (it still works there too, of course).

Lib/test/test_sunaudiodev.py

@@ -5,7 +5,12 @@ import os
 def findfile(file):
 	if os.path.isabs(file): return file
 	import sys
-	for dn in sys.path:
+	path = sys.path
+	try:
+		path = [os.path.dirname(__file__)] + path
+	except NameError:
+		pass
+	for dn in path:
 		fn = os.path.join(dn, file)
 		if os.path.exists(fn): return fn
 	return file