COMP: fix library linkage (#2784), silence some unused variable warnings

...tions/utilities/mesh/conversion/kivaToFoam/readKivaGrid.H

...myMesh/conformalVoronoiMesh/DelaunayMesh/DelaunayMeshIO.C

...nformalVoronoiMesh/DelaunayMesh/DistributedDelaunayMesh.C

...Mesh/cellShapeControl/cellShapeControl/cellShapeControl.C

...hapeControl/controlMeshRefinement/controlMeshRefinement.C

...turePointConformer/featurePointConformerSpecialisations.C

...stProcessing/dataConversion/foamToVTK/convertAreaFields.H

...s/surface/surfaceBooleanFeatures/surfaceBooleanFeatures.C

applications/utilities/surface/surfaceClean/collapseBase.C

src/conversion/starcd/STARCDMeshReader.C

src/fileFormats/vtk/part/foamVtuSizingImpl.C

src/finiteVolume/cfdTools/general/MRF/MRFZone.C

...cts/field/regionSizeDistribution/regionSizeDistribution.C

src/functionObjects/utilities/vtkWrite/vtkWriteImpl.C

...glomerationMethods/MGridGenGamgAgglomeration/Make/options

...vAgglomerationMethods/pairPatchAgglomeration/Make/options

...onMethods/pairPatchAgglomeration/pairPatchAgglomeration.H

...DisplacementMeshMover/displacementMotionSolverMeshMover.C

...mesh/snappyHexMesh/meshRefinement/meshRefinementBaffles.C

...snappyHexMesh/meshRefinement/meshRefinementProblemCells.C