thirdparty: don't make zope a namespace package...
thirdparty: don't make zope a namespace package
There are a gazillion zope.* packages in the wild. So zope/__init__.py
needs to be a namespace package. But in Mercurial, we have 1 zope
package. And even if we had multiple packages, they'd all be in
thirdparty/zope/. So we don't need a namespace package.
Differential Revision:
https://phab.mercurial-scm.org/D2929
