Fix support-old-webtest patch to work with master
Remove unused domain import/export patch

Patch has been merged into master, no need to keep it here.
Hardcode version in debian/rules

This is a hack to be able to build sdist from upstream without the
'Versioning for this project requires...' error
Add depends on python-dnspython
Use upstream branch for orig tarball
Revert "Add depends on python-dnspython"

This reverts commit 55be34b973292a340b589f35a9041376baa7c369, which introduced a
typo.
Add depends on python-dnspython