FileMgr → GaudiKernel Relation

File in GaudiTestSuite/src/FileMgr	Includes file in GaudiKernel
FileMgrTest.cpp	include / GaudiKernel / IFileMgr.h
FileMgrTest.cpp	include / GaudiKernel / ISvcLocator.h
FileMgrTest.cpp	include / GaudiKernel / MsgStream.h
FileMgrTest.h	include / GaudiKernel / Algorithm.h
FileMgrTest.h	include / GaudiKernel / IFileMgr.h
FileMgrTest.h	include / GaudiKernel / ServiceHandle.h