Let backportsclone.timetravel have structure like backports.functools…

…_lru_cache.

That might be the one that causes a problem for me on Python 2.7.
Maybe because I have a Python from Anaconda with a 'backports' module in it.
Still cannot reproduce the problem in tests.

src/z3c/autoinclude/dependency.txt

@@ -22,7 +22,6 @@ for the requirements of that distribution::
     >>> pprint(sorted(reqs, key=lambda r:r.project_name))
     [Requirement.parse('BCPackage'),
      Requirement.parse('TestDirective'),
-     Requirement.parse('backportsclone'),
      Requirement.parse('backportsclone.timetravel'),
      Requirement.parse('z3c.autoinclude')]
 

src/z3c/autoinclude/tests/APackage/setup.py

@@ -22,7 +22,7 @@
         'BCPackage',
 	'z3c.autoinclude',
 	'TestDirective',
-	'backportsclone',
+	# 'backportsclone',
 	'backportsclone.timetravel',
       ],
       entry_points="""

src/z3c/autoinclude/tests/backportsclone.timetravel/backportsclone/__init__.py

@@ -1,3 +1 @@
-# This is a Python "namespace package" http://www.python.org/dev/peps/pep-0382/
-from pkgutil import extend_path
-__path__ = extend_path(__path__, __name__)
+__path__ = __import__('pkgutil').extend_path(__path__, __name__)

src/z3c/autoinclude/tests/backportsclone.timetravel/setup.py

@@ -11,5 +11,5 @@
     author='Maurits van Rees',
     author_email='info@example.org',
     url='https://github.com/zopefoundation/z3c.autoinclude/issues/6',
-    packages=['backportsclone', 'backportsclone.timetravel'],
+    packages=['backportsclone'],
     )