lopper: update to v1.0 and setuptools based project

Switching to lopper 1.0 brings us a more standard setuptools
based project for install and packaging.

This update also fixes the experimental update to master-next,
which was incomplete and broken.

The only signficant user visible change with this update is
that lopper.py is now 'lopper' and any calling recipes need
to be updated accordingly.

Signed-off-by: Bruce Ashfield <bruce.ashfield@gmail.com>