DELTASPIKE-665 Utility method to always create context.
DELTASPIKE-653 Added servlet support and tests in two embedded containers.
DELTASPIKE-666 OWB and OEJB containers could throw NullPointerExceptions
DELTASPIKE-669 Shutdown contexts before destroying the bean.
DELTASPIKE-653 Cleaned up some dependencies.
DELTASPIKE-653 Copyright headers.