devguide_log4j.xml logging documentation

[christianforster]

http://exist-db.org/exist/apps/doc/devguide_log4j.xml

The term "XXXXXXXXX" is used several times, I suppose it should be replaced with "eXist-db".

[dizzzz]

Checking the document right now... I am not sure why we need this text anyway. In stead of a long page of proza i think it is better to have a compact text describing

• how to change configuration
• a code snippet how to use it internally
• code snippet how to use it from xquery code
• examples how to integrate it with remote services

@wolfgangmm I think you 'll agree ?

[duncdrum]

XXXXXXXXX is still there, I would add:

• the default location of the log files

to Dannes' list.

[xatapult]

xxxxxxxx is no more on this page...