CGNS I/O rewrite - alpha version

- don't play tricks in Extend1DMesh & co: always follow the option (so we
  can predictbly mix point/curvature lcs with fields)

things down when you have many many surfaces)
- fix out of bound acces in transfinite callback when selecting > 100
entities

orientation in extrusions

Added static routine getInfoMSH - returns name and No. vertices for a
MSH type

Addes MSH_NUM_TYPE - number of MSH element types

-added routines getEdgeVertices and getFaceVertices for returning all
vertices on a face or edge.  Includes some modification to getEdge and
getFace too.
-added ASCII representations of each element type.