Put Lib/lib-old back on to sys.path for module renames.
diff --git a/Modules/Setup.dist b/Modules/Setup.dist
index d87e3ba..ee361cf 100644
--- a/Modules/Setup.dist
+++ b/Modules/Setup.dist
@@ -98,7 +98,10 @@
# The TKPATH variable is always enabled, to save you the effort.
TKPATH=:lib-tk
-COREPYTHONPATH=$(DESTPATH)$(SITEPATH)$(TESTPATH)$(MACHDEPPATH)$(EXTRAMACHDEPPATH)$(TKPATH)
+# Path component for old modules.
+OLDPATH=:lib-old
+
+COREPYTHONPATH=$(DESTPATH)$(SITEPATH)$(TESTPATH)$(MACHDEPPATH)$(EXTRAMACHDEPPATH)$(TKPATH)$(OLDPATH)
PYTHONPATH=$(COREPYTHONPATH)