AbortEvent → GaudiKernel Relation

File in GaudiTestSuite/src/AbortEvent	Includes file in GaudiKernel
AbortEventAlg.cpp	include / GaudiKernel / IIncidentSvc.h
AbortEventAlg.cpp	include / GaudiKernel / Incident.h
AbortEventAlg.h	include / GaudiKernel / Algorithm.h