- fixed MED node ordering
- polished 64 bit Cocoa Mac OS X FLTK version
- updated copyright

physical tags, partitioning, second order prisms

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too hard to maintain

- fix bb computation to avoid model jumping around when adding points in z=0 plane
- pass interpol matrices as ref

   1) this removes the asymmetry in all the routines involving mesh
      elements associated with points

   2) it makes it possible to use point-based datasets in the
      model-based post-processing module

  **********************************************************
    PLEASE TEST --- ESPECIALLY THE INPUT/OUTPUT ROUTINES!
  **********************************************************

* made GModel::getEntities() more efficient and generalized its use

* revert last commit from laurent
* new getNumElements() et getElement() functions in GEdge/Face/Region to
  simplify access to mesh

getTypeOfElements  and addThisTypeOfElement
to GEntities

added
getTypeOfElements  from Gentities and Physical Groups in GModel

A minimal Gmsh "null" model can now be embedded with no external dependencies

add experimental support for automatic on-the-fly boundary computation
in vertex arrays

- don't use vertex arrays for quads anymore (they are wrong for non-plane
quad faces): just use triangles everywhere

- removed _links in PView

- various small cleanups

rewrote vertex array code for meshes in the same way we do it now for
post-processing (much simpler, pretty much same speed, and takes a bit
less memory)

fix "hide unselected" for proj surf

start new gui for reparameterization

new option to compute char lengths from curvature + removed most unused mesh options