- Make sure that all package data is included when using setuputils.

  (Forward-port from 3.8 branch)

- winlock.c does not exist anymore, so do not try to compile it. This 
  only affects zpkg.

- Ignore a generated file.

setup.py

@@ -80,6 +80,7 @@ else:
             ],
         zip_safe = False,
         entry_points = entry_points,
+        include_package_data = True,
         )
     scripts = []
 

src/ZODB/SETUP.cfg

 # Extension information for zpkg.
-
-<extension winlock>
-  source winlock.c
-</extension>