[xmlblaster] Added example configuration for inter-cluster communication over email

[Marcel Ruff]

Hi,

there is a new configuration example available using EMAIL for cluster
communication, see

  xmlBlaster/demo/javaclients/cluster/email

and

  
http://www.xmlblaster.org/xmlBlaster/demo/javaclients/cluster/email/README

You can transparently switch for example from SSL socket to compressed 
email communication (preserving all failure recovery features)
if for example two companies need to connect but don't want to open 
their firewall.

regards
Marcel