Register traversers where they are defined, not in zope.traversing.

This kill some more zope.app dependencies in zope.traversing.

configure.zcml

@@ -67,4 +67,22 @@
     <allow interface=".constraints.IItemTypePrecondition" />
   </class>
 
+  <view
+      for="zope.app.container.interfaces.IItemContainer"
+      type="zope.publisher.interfaces.browser.IBrowserRequest"
+      provides="zope.publisher.interfaces.browser.IBrowserPublisher"
+      factory="zope.app.container.traversal.ItemTraverser"
+      permission="zope.Public"
+      allowed_interface="zope.publisher.interfaces.browser.IBrowserPublisher"
+      />
+
+  <view
+      for="zope.app.container.interfaces.ISimpleReadContainer"
+      type="zope.publisher.interfaces.browser.IBrowserRequest"
+      provides="zope.publisher.interfaces.browser.IBrowserPublisher"
+      factory="zope.app.container.traversal.ItemTraverser"
+      permission="zope.Public"
+      allowed_interface="zope.publisher.interfaces.browser.IBrowserPublisher"
+      />
+
 </configure>