Force email package to be loaded in py2exe

With Python 2.5, the email package is not fully loaded by py2exe, due to
dynamic imports which are not found by modulefinder. This breaks the patchbomb
extension. This patch forces the whole email package to be included so that
the dynamic imports work as expected.

setup.py

@@ -125,7 +125,7 b" setup(name='mercurial',"
                    [os.path.join(root, file_) for file_ in files])
                   for root, dirs, files in os.walk('templates')],
       cmdclass=cmdclass,
-      options=dict(py2exe=dict(packages=['hgext']),
+      options=dict(py2exe=dict(packages=['hgext', 'email']),
                    bdist_mpkg=dict(zipdist=True,
                                    license='COPYING',
                                    readme='contrib/macosx/Readme.html',