ENH: communicators: more communicators through

src/OpenFOAM/db/IOstreams/Pstreams/UIPstream.C

src/OpenFOAM/db/IOstreams/Pstreams/UPstream.C

src/OpenFOAM/db/IOstreams/Pstreams/UPstream.H

src/OpenFOAM/db/error/messageStream.C

src/OpenFOAM/matrices/LUscalarMatrix/LUscalarMatrix.C

src/OpenFOAM/meshes/lduMesh/lduPrimitiveMesh.H

src/OpenFOAM/meshes/polyMesh/globalMeshData/globalIndex.C

src/OpenFOAM/meshes/polyMesh/globalMeshData/globalIndex.H

src/OpenFOAM/meshes/polyMesh/globalMeshData/globalIndexI.H

...esh/polyPatches/constraint/processor/processorPolyPatch.C

...esh/polyPatches/constraint/processor/processorPolyPatch.H

src/Pstream/mpi/PstreamGlobals.C

src/Pstream/mpi/PstreamGlobals.H

src/Pstream/mpi/UIPread.C

src/Pstream/mpi/UOPwrite.C

src/Pstream/mpi/UPstream.C

src/finiteVolume/fvMatrices/fvMatrix/fvMatrixSolve.C

src/finiteVolume/fvMatrices/fvScalarMatrix/fvScalarMatrix.C

...positionMethods/decompositionMethod/decompositionMethod.C