COMP: improvements to selection table helper classes

src/OSspecific/MSwindows/signals/sigStopAtWriteNow.C

src/OSspecific/MSwindows/signals/sigWriteNow.C

src/OSspecific/POSIX/signals/sigStopAtWriteNow.C

src/OSspecific/POSIX/signals/sigWriteNow.C

src/OpenFOAM/db/IOobject/IOobject.C

...db/runTimeSelection/construction/runTimeSelectionTables.H

...Selection/memberFunctions/memberFunctionSelectionTables.H

src/OpenFOAM/dimensionSet/dimensionSets.C

src/OpenFOAM/global/debug/defineDebugSwitch.H