ENH: add a patches filter for volMesh conversion (issue #2)

src/catalyst/areaMesh/catalystFaMesh.C

src/catalyst/catalystDict

src/catalyst/cloud/catalystCloud.C

src/catalyst/volMesh/catalystFvMesh.C

src/catalyst/volMesh/catalystFvMesh.H

src/catalyst/volMesh/foamVtkFvMeshAdaptor.C

src/catalyst/volMesh/foamVtkFvMeshAdaptor.H

src/catalyst/volMesh/foamVtkFvMeshAdaptorFieldTemplates.C

src/catalyst/volMesh/foamVtkFvMeshAdaptorFields.C

src/catalyst/volMesh/foamVtkFvMeshAdaptorGeom.C

...sfer/chtMultiRegionFoam/multiRegionHeater/system/catalyst

...MultiRegionFoam/multiRegionHeater/system/scripts/showT.py

...ultiRegionFoam/multiRegionHeater/system/scripts/slice1.py