Added the relax and Debug global varibles to the error module.
These changes were suggested at https://mail.gna.org/public/relax-devel/2007-02/msg00013.html (Message-id: <7f080ed10702262013v1242bbc9y6ba245f8aa7c5275@...>).
Authored by: bugman 2007-02-27
Parent: [r3037]
Child: [r3039]