Launchpad #147201: treat container-class in zope.conf as a string, making it...

Launchpad #147201: treat container-class in zope.conf as a string, making it possible to use types from extra products directories.

doc/CHANGES.txt

@@ -166,6 +166,9 @@ Zope Changes
 
     Bugs Fixed
 
+      - Launchpad #147201: treat container-class in zope.conf as a string,
+        making it possible to use types from extra products directories.
+
       - Collector #2278: form ':record' objects did not implement enough
         of the mapping protocol.
 

lib/python/Zope2/Startup/zopeschema.xml

@@ -242,7 +242,7 @@
       </description>
     </key>
 
-    <key name="container-class" datatype=".python_dotted_path">
+    <key name="container-class" datatype="string">
       <description>
        Change the contiainer class a (mounted) database uses on a
        per-database basis to support a different container than a plain