Merge of jim-adapter branch:

This branch has three major refactorings on it:

- A redesign of the adapter registration machinery

- A major simplification of local component management

  See zope.component.interfaces.IComponentRegistry.

- A flexible system for combining component registries.

- A beginning of the migration of packages out of zope.app.

- A new package for doing deferred imports.  This allows you
  to make names available at the package level without creating
  circular imports.  See zope.deferredimport and see
  zope.component.__init__ for examples of it's use.  This package
  also provides a way to deprecate names in a module.

- Deprecation of zope. i18nmessageid.MessageID

I should have created checkin messages for individual sets of related
changes, but there were just too many for the time allowed.

README.txt

@@ -102,6 +102,7 @@ rejects the content for publication.  We can use a condition for this:
 
     >>> pd = process.ProcessDefinition('sample')
     >>> zope.component.provideUtility(pd, name=pd.id)
+
     >>> pd.defineActivities(
     ...     author = process.ActivityDefinition(),
     ...     review = process.ActivityDefinition(),
@@ -336,6 +337,7 @@ example by passing it to the definition constructor:
 
     >>> pd = process.ProcessDefinition('sample', integration)
     >>> zope.component.provideUtility(pd, name=pd.id)
+
     >>> pd.defineActivities(
     ...     author = process.ActivityDefinition(),
     ...     review = process.ActivityDefinition(),
@@ -408,6 +410,7 @@ redefine the process:
 
     >>> pd = process.ProcessDefinition('sample', integration)
     >>> zope.component.provideUtility(pd, name=pd.id)
+
     >>> pd.defineActivities(
     ...     author = process.ActivityDefinition(),
     ...     review = process.ActivityDefinition(),