FPE fix to MSVertexTrackletTool.cxx

...AthenaExamples/AthExHelloWorld/python/HelloWorldConfig.py

Control/AthenaKernel/AthenaKernel/DataBucket.h

Control/AthenaKernel/AthenaKernel/DataBucket.icc

Control/AthenaKernel/AthenaKernel/DataBucketBase.h

Control/AthenaKernel/AthenaKernel/DataBucketBase.icc

Control/AthenaKernel/AthenaKernel/DataBucketTraitFwd.h

Control/AthenaKernel/AthenaKernel/IRegisterTransient.h

Control/AthenaKernel/AthenaKernel/MetaContDataBucket.h

Control/AthenaKernel/AthenaKernel/MetaContDataBucket.icc

Control/AthenaKernel/AthenaKernel/RCUUpdater.h

Control/AthenaKernel/AthenaKernel/RCUUpdater.icc

Control/AthenaKernel/AthenaKernel/SourceID.h

Control/AthenaKernel/AthenaKernel/StorableConversions.h

Control/AthenaKernel/share/DataBucket_test.ref

Control/AthenaKernel/share/MetaContDataBucket_test.ref

Control/AthenaKernel/share/RCUUpdater_test.ref

Control/AthenaKernel/test/DataBucket_test.cxx

Control/AthenaKernel/test/MetaContDataBucket_test.cxx

Control/AthenaKernel/test/RCUUpdater_test.cxx

Control/CxxUtils/CxxUtils/CachedPointer.h