Upgrade to the latest version of AMQ

Upgraded to the latest GA of AMQ available from JBoss Developer Portal.
Change karaf command parameter

The newer version of Karaf no longer seems to respect the
“Webapp-Context” parameter, and require the newer “Web-ContextPath”
Not an authoritative source in any way, but this discussion seems to
explain it:
http://irclogs.dankulp.com/logs/irclogger_log/karaf?date=2013-12-08,Sun&
text=on