Massive changes from SF 589982 (tempfile.py rewrite, by Zack
Weinberg).  This changes all uses of deprecated tempfile functions to
the recommended ones.
diff --git a/Lib/test/test_pkgimport.py b/Lib/test/test_pkgimport.py
index 523ba5a..1343173 100644
--- a/Lib/test/test_pkgimport.py
+++ b/Lib/test/test_pkgimport.py
@@ -17,8 +17,7 @@
                 del sys.modules[module_name]
 
     def setUp(self):
-        self.test_dir = tempfile.mktemp()
-        os.mkdir(self.test_dir)
+        self.test_dir = tempfile.mkdtemp()
         sys.path.append(self.test_dir)
         self.package_dir = os.path.join(self.test_dir,
                                         self.package_name)