program, rather than flagging the ``warn()`` call in ``pkg_resources``.

* Avoid giving runtime conflict warnings for namespace packages, even if they
  were declared by a different package than the one currently being activated.

--HG--
branch : setuptools
extra : convert_revision : svn%3A6015fed2-1504-0410-9fe1-9d1591cc4771/sandbox/trunk/setuptools%4041391