Fix maven warnings about overriding Netty's version.
HORNETQ-1209 HQ to require Java7.
HORNETQ-1217 Fix junit4 compilation with ambiguous calls.
HORNETQ-1217 Rename some classes to match standard naming conventions.
Merge pull request #1096 from FranciscoBorges/master

Require Java7 on master already
Use explicit locks in TimeoutTask to prevent blocking creation of new subscriptions while culler is running.