Fix a NPE

git-svn-id: https://svn.apache.org/repos/asf/james/mailbox/trunk@1539626 13f79535-47bb-0310-9956-ffa450edef68
Record the cache statistics

git-svn-id: https://svn.apache.org/repos/asf/james/mailbox/trunk@1539968 13f79535-47bb-0310-9956-ffa450edef68
prepare folder for proper package

git-svn-id: https://svn.apache.org/repos/asf/james/mailbox/trunk@1539969 13f79535-47bb-0310-9956-ffa450edef68
move to proper package

git-svn-id: https://svn.apache.org/repos/asf/james/mailbox/trunk@1539970 13f79535-47bb-0310-9956-ffa450edef68
proper package names

git-svn-id: https://svn.apache.org/repos/asf/james/mailbox/trunk@1539973 13f79535-47bb-0310-9956-ffa450edef68
Make SimpleMessageTest platform independent, patch contributed by Mark

git-svn-id: https://svn.apache.org/repos/asf/james/mailbox/trunk@1586958 13f79535-47bb-0310-9956-ffa450edef68
Prototype mailbox-cassandra implementation