SHIRO-412: I got tired referencing Hazelcast-based examples I created outside of Shiro, so I'm bringing it into the project properly.  Works great.  Hazelcast is Apache-licensed as well and probably should be our default caching recommendation (Ehcache is I think still LGPL and a touchy issue - we can't extend any of its code - just invoke it).

git-svn-id: https://svn.apache.org/repos/asf/shiro/trunk@1433611 13f79535-47bb-0310-9956-ffa450edef68