xreload: unable to reload top level modules correctly

[d-maurer]

plone.reload.xreload.Reloader.reload determines a wrong __name__ for top level modules. For those modules, pkgname is defined as None and the name is defined as '%s.%s' % (pkgname, modname). As a consequence, the objects in the temporary module get a wrong __module__ attribute (of the form None.<modname>) which causes later that the old objects are overridden (instead of updated).

Recommendation: Replace

        tmpns = {'__name__': '%s.%s' % (pkgname  modname),
                 '__file__': filename,
                 '__doc__': modns['__doc__']}

by

        tmpns = {'__name__': self.mod.__name__,
                 '__file__': filename,
                 '__doc__': modns['__doc__']}