duplicity/gdocs backend : relax type testing.

--- duplicity/backends/gdocsbackend.orig.py    2013-07-04 08:22:24.030257937 +0200
+++ duplicity/backends/gdocsbackend.py 2013-07-04 07:59:17.593542649 +0200
@@ -220,7 +220,12 @@
             if title:
                 result = []
                 for entry in entries:
-                    if (not type) or (entry.get_resource_type() == type):
+                    entry_type = entry.get_resource_type().split('/')[0]
+
+                    if (not type) or (type.split('/')[0] == entry_type):
                         if folder_id != GDocsBackend.ROOT_FOLDER_ID:
                             for link in entry.in_collections():
                                 folder_entry = self.client.get_entry(link.href, None, None,