MODE-1587 - Updated the modeshape distribution so that it runs on a AS7.2 server and re-enabled the integration tests modules. However, for a local build to work, one needs for the time being a locally installed (via Maven) version of AS7.2.

 In the process of updating the kit, a couple of other things were updated:
 - exception processing around WritableSessionCache#persistChanges
 - logging of exceptions / errors in the ModeShape Webdav Servlet
Updated the JGroups test configuration, together with the IPv4 and IPv6 profiles. By default, neither IPv4 nor IPv6 will be forced, meaning that whatever the underlying OS supports will be used (see http://docs.oracle.com/javase/1.5.0/docs/guide/net/ipv6_guide/index.html for more information)

Also, It seems that on Windows (at least) JGroups 3.2 is a lot faster when using IPv6 than it is when using IPv4, so a new OS-dependent profile was added to modeshape-jcr. Also, it seems Arquillian doesn't work with IPv6, so IPv4 was enforced for the integration tests.
MODE-1587 - Moved the JBossAS modules from the standard build lifecycle into dedicated profiles, so that user can still run "mvn clean install". We should keep this at least until we know what the Maven availability of the AS7 dist zip will be.