diff -r b794167af4f7 dist.py
--- a/dist.py	Mon May 02 10:07:17 2011 -0700
+++ b/dist.py	Tue Jun 07 14:08:37 2011 -0700
@@ -78,6 +78,9 @@
             return True
         return False
     def file_excl(reldirpath, filename):
+        # Retain directories in doc/[manual|tutorial|models]/source/_static/
+        if filename == '.hidden':
+            return False
         if filename.startswith('.'):
             return True
         if filename.endswith('.pyc') or filename.endswith('.pyo'):