The Debug flag and Relax instance are placed as globals in the 'errors' and 'warnings' modules.
See https://mail.gna.org/public/relax-devel/2007-02/msg00012.html (Message-id:
<7f080ed10702261928q4669285ekae60eee4631c1745@...>) and
https://mail.gna.org/public/relax-devel/2007-02/msg00011.html (Message-id:
<1172508127.8066.147.camel@...>) for discussions.
