ENH: foamyHexMesh: Allow surface point insertion on close surfaces

ENH: foamyHexMesh: do not point motion to cross surfaces
ENH: foamyHexMesh: do not allow perturbation to cross surface
ENH: foamyHexMesh: change inside/outside test to check for nearest intersection
BUG: foamyHexMesh: With surfaces of same priority do not overwrite cell size
ENH: foamyHexMesh: insert surface points on close parallel surfaces
BUG: foamyHexMesh: write to own processor file in parallel
ENH: foamyHexMesh: Insert surface points if internal points are exposed
ENH: foamyHexMesh: add hasBoundaryPoint() to indexedCell
REVERT: foamyHexMesh: do not check inside/outside for surface points
REVERT: foamyHexMesh: correct function argument list
REVERT: foamyHexMesh: correct function argument list