COMP: backport of updates for gcc-92 compilation

...oiMesh/conformalVoronoiMesh/indexedVertex/indexedVertex.H

src/OpenFOAM/containers/Bits/PackedList/PackedList.H

src/OpenFOAM/containers/Bits/bitSet/bitSet.H

src/OpenFOAM/containers/HashTables/HashTable/HashTable.H

.../containers/LinkedLists/linkTypes/DLListBase/DLListBase.H

.../containers/LinkedLists/linkTypes/SLListBase/SLListBase.H

src/OpenFOAM/containers/Lists/SubList/SubList.H

src/OpenFOAM/containers/Lists/UList/UList.H

src/OpenFOAM/db/IOobject/IOobject.H

src/OpenFOAM/db/IOobjects/IOdictionary/baseIOdictionary.C

src/OpenFOAM/db/IOobjects/IOdictionary/baseIOdictionary.H

src/OpenFOAM/db/IOstreams/IOstreams/IOstream.H

src/OpenFOAM/db/IOstreams/IOstreams/Istream.H

src/OpenFOAM/db/IOstreams/IOstreams/Ostream.H

src/OpenFOAM/db/IOstreams/Sstreams/OSstream.H

src/OpenFOAM/db/IOstreams/Tstreams/ITstream.C

src/OpenFOAM/db/IOstreams/Tstreams/ITstream.H

src/OpenFOAM/db/error/IOerror.C

src/OpenFOAM/db/error/error.C

src/OpenFOAM/db/error/error.H