Get rid of a bunch more has_key() uses.  We *really* need a tool for this.
test_aepack now passes.  IDLE still needs to be converted (among others).
diff --git a/Lib/distutils/dir_util.py b/Lib/distutils/dir_util.py
index a4aff58..92f4934 100644
--- a/Lib/distutils/dir_util.py
+++ b/Lib/distutils/dir_util.py
@@ -207,7 +207,7 @@
             cmd[0](cmd[1])
             # remove dir from cache if it's already there
             abspath = os.path.abspath(cmd[1])
-            if _path_created.has_key(abspath):
+            if abspath in _path_created:
                 del _path_created[abspath]
         except (IOError, OSError), exc:
             log.warn(grok_environment_error(