Changes applied to fix the networkcache.txt

The changes were made in the previous commit:
 - 75a7c904

src/zc/buildout/networkcache.py

@@ -137,9 +137,13 @@ def get_filename_from_url(url):
     """Inspired how pip get filename from url.
     """
     url = url.split('#', 1)[0]
-    url = url.split('?', 1)[0]
     url = url.rstrip('/')
     name = posixpath.basename(url)
+    name_split_list = name.split('?', 1)
+    if name_split_list[0]:
+      name = name_split_list[0]
+    else:
+      name = name_split_list[1]
     assert name, (
            'URL %r produced no filename' % url)
     return name