STYLE: eliminate duplicate includes (issue #293)

applications/test/mappedPatch/Test-MappedPatch.C

...cations/utilities/mesh/conversion/fireToFoam/fireToFoam.C

...cations/utilities/mesh/conversion/gmshToFoam/gmshToFoam.C

...VoronoiMesh/conformalVoronoiMesh/conformalVoronoiMeshIO.C

...ons/utilities/mesh/manipulation/checkMesh/checkGeometry.C

...ties/parallelProcessing/redistributePar/redistributePar.C

...ng/dataConversion/foamToEnsightParts/foamToEnsightParts.C

src/OSspecific/POSIX/fileMonitor.C

src/OpenFOAM/db/error/IOerror.C

src/OpenFOAM/meshes/meshShapes/cellMatcher/pyrMatcher.C

src/OpenFOAM/meshes/meshShapes/cellMatcher/tetMatcher.C

src/OpenFOAM/meshes/meshShapes/cellMatcher/tetWedgeMatcher.C

...nFOAM/meshes/polyMesh/polyBoundaryMesh/polyBoundaryMesh.C

src/OpenFOAM/meshes/polyMesh/polyMeshCheck/polyMeshTools.C

src/conversion/ccm/reader/ccmReaderMesh.C

src/dynamicMesh/fvMeshAdder/fvMeshAdder.C

src/dynamicMesh/fvMeshTools/fvMeshTools.C

src/functionObjects/graphics/runTimePostProcessing/scene.H

src/meshTools/cellDist/cellDistFuncs.H

src/meshTools/regionSplit/regionSplit.C