First cut at adapter-registry refactoring. The refactoring makes

adapter lookup work more like method lookup.  This provides:

- a much simpler algorithm,

- a basis for super-like adapter lookup, and

- a fix for a bug in multi-adapter lookup.

These changes also remove the distinction between objects with no
interface declarations and objects that declare that they provide
Interface.

Unfortunately, these version is *much* too slow.  I'm checking this
version in to save it before trying some variations.

configure.zcml

@@ -0,0 +1,54 @@
+<configure xmlns="http://namespaces.zope.org/zope">
+
+  <content class=".viewpagetemplatefile.BoundPageTemplate">
+    <allow attributes="__call__ __str__ __name__" />
+  </content>
+
+  <adapter
+      for="*"
+      provides="zope.app.traversing.interfaces.IPathAdapter"
+      factory=".talesapi.ZopeTalesAPI"
+      name="zope" 
+      />
+
+  <adapter
+      for="*"
+      provides="zope.app.traversing.interfaces.IPathAdapter"
+      factory=".urlquote.URLQuote"
+      name="url"/> 
+
+ <content class="zope.tales.tales.Iterator">
+    <allow interface="zope.tales.interfaces.ITALESIterator" />
+ </content>
+
+ <class class=".engine.ZopePathExpr">
+    <allow attributes="__call__" />
+ </class>
+ <class class=".engine.TrustedZopePathExpr">
+    <allow attributes="__call__" />
+ </class>
+ <class class=".engine.ZopePythonExpr">
+    <allow attributes="__call__" />
+ </class>
+ <class class=".engine.PythonExpr">
+    <allow attributes="__call__" />
+ </class>
+
+ <class class="zope.tales.expressions.StringExpr">
+    <allow attributes="__call__" />
+ </class>
+ <class class="zope.tales.expressions.NotExpr">
+    <allow attributes="__call__" />
+ </class>
+ <class class="zope.tales.expressions.DeferExpr">
+    <allow attributes="__call__" />
+ </class>
+
+ <adapter
+     for="zope.app.pagetemplate.viewpagetemplatefile.BoundPageTemplate
+          zope.publisher.interfaces.browser.IBrowserRequest"
+     provides="zope.publisher.interfaces.browser.IBrowserPublisher"
+     factory="zope.app.publication.traversers.NoTraverser"
+     />
+
+</configure>