[jboss-as7-dev] Update AS config schema to 1.3

[Darran Lofthouse]

Would there be any objections to a pull request going in to increment 
the schema version without adding additional config?

The reason I ask is the changes I am working on are going to take a few 
more days before I am ready to send them in and they involve schema 
updates so the first change is enabling version 1.3 - in the meantime if 
anyone else was to also need a schema update the work (actually takes a 
few steps to update) would be duplicated and would most likely conflict.

Regards,
Darran Lofthouse.