Make the typical distributed cache configurations configurable via jboss-web.xml; don't force users to go to a separate Infinispan configuration file.

The typical configurations are:

1) synchronous or async (perhaps a better term? async == fire and forget)
2) total replication or not?
3) if "not", number of backup copies.

Potentially 2 and 3 could be combined into a numbackups param:

-1 == total replication (i.e. unlimited)
0 == cache is in local mode
> 0 = DIST w/ numbackups + 1 copies.