Fix python/setup.py.in

ISSUE=4607061

git-svn-id: https://svn.baidu.com/idl/trunk/paddle@1472 1ad973e4-5ce8-4261-8a94-b56d1f490c56

python/setup.py.in

@@ -8,7 +8,7 @@ packages=['paddle',
           'paddle.trainer_config_helpers',
           'paddle.utils']
 
-if len(INTERNAL_PACKAGE) == 0:
+if len(INTERNAL_PACKAGE) != 0:
     packages.append(INTERNAL_PACKAGE)
 
 setup(name='paddle',