[AppDB] Proposed Maintainer Guide

[Francois Gouget]

The Application Database is missing a description of the job of an 
Application Maintainer. So I cleaned up the Maintainer Guide I posted 
earlier and prepared it for integration into the Application Database 
site.

I attached it to this email for review. Let me know if there is 
anything missing, things to change, etc.

-- 
Francois Gouget         fgouget(a)free.fr        http://fgouget.free.fr/
            Cahn's Axiom: When all else fails, read the instructions.