ENH: fvPatch: allow explicit coupled provision for any patch.

src/OpenFOAM/Make/files

...penFOAM/meshes/polyMesh/polyPatches/polyPatch/polyPatch.C

...penFOAM/meshes/polyMesh/polyPatches/polyPatch/polyPatch.H

src/finiteVolume/Make/files

...lume/fields/fvsPatchFields/fvsPatchField/fvsPatchFields.C

src/finiteVolume/fvMesh/fvBoundaryMesh/fvBoundaryMesh.C

src/finiteVolume/fvMesh/fvMesh.C

...iteVolume/fvMesh/fvPatches/basic/coupled/coupledFvPatch.H

src/finiteVolume/fvMesh/fvPatches/fvPatch/fvPatch.H

.../incompressible/simpleFoam/pitzDaily/system/blockMeshDict