Zope-site

==================

- Avoid a test dependency on zope.copypastemove by testing the correct
persistent behavior of a site manager using the normal pickle module.

==================

- Removed functional testing setup and dependency on zope.app.testing.

==================

- Moved the zope.site.hooks functionality to zope.component.hooks as it isn't
actually dealing with zope.site's concept of a site.

- Import ISite and IPossibleSite from zope.component after they were moved
there from zope.location.

==================

- Cleaned up the undeclared dependency on zope.app.publication by moving the
two relevant subscriber registrations and their tests to that package.

- Dropped the dependency on zope.traversing which was only used to access
zope.location functionality. Configure zope.location for some tests.

- Demoted zope.configuration to a testing dependency.

==================

- Set __parent__ and __name__ in the LocalSiteManager's constructor
after calling constructor of its superclasses, so __name__ doesn't
get overwritten with empty string by the Components constructor.

- Don't set __parent__ and __name__ attributes of site manager in
SiteManagerContainer's ``setSiteManager`` method, as they're
already set for LocalSiteManager. Other site manager implementations
are not required to have those attributes at all, so we're not
adding them anymore.

==================

- Propagate an ObjectRemovedEvent to the SiteManager upon removal of a
SiteManagerContainer.