ENH: solidBodMotionFvMesh - add support for specifying cells by cellSet
ENH: polyMesh - add functions to set regIOobject up-to-date with mesh points for topology change
ENH: forces FO - porosity calc updated for mesh changes
ENH: porosity model updates for moving meshes
ENH: removed unused code
Merge branch 'master' of github.com:OpenFOAM/OpenFOAM-2.3.x