#228 EJB Timer Service

[John Silver]

Initial Version of EJB Timer Service is added to the CVS
Head. It does support the following:
- EJBContext.getTimerService()
- Stateless Session Beans
- Entity Beans
- Uses JBoss Scheduler
- provides the AbstractTimerSource MBean to add 3rd
party timer products

Current limitations are:
- persistence is not implemented
- transaction support is not implemented
- no Message Driven Bean support

Have fun - Andy