- Unless the points(), cells(), patches() methods are called, the classes
should know maintain a lightweight representation for as long as possible.
- bugfix: old-code used xferMove() instead of xferCopy() when creating the
topology mesh - causing const pointField& to break if the code order was
changed
- relocate blockMesh from src/meshing -> src/mesh
- added obj surfaceWriter
- don't bother with prepended field names on obj and stl surfaceWriter.
It fills the disk and suggests differences where there are none.
