Dropped debian package metadata

This is being maintained ouside psycopg2 source tree:
http://anonscm.debian.org/viewvc/python-modules/packages/psycopg2/trunk/
and the copy in our tree is out of date.
Dropped configuration of unused logger inside the pool module
Dropped unmaintained changelog

Welcome to the worderful world of SCM.
Dropped Zope support
Added ZPsycopgDA URL to the NEWS file
Merge branch 'dead-bytes' into devel