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

removed parFromPoint and closestPoint from GEdge; replace their use in
cgns code by appropriate reparamMeshVertex calls (not tested: I don't have
cgns)

removed now unused golden section minimizer (brent), now unused

There's no new functionality for now: PLEASE TEST THAT EVERYTHING
WORKS AS IT USED TO BEFORE.

- removed every "throw;", i.e., every throw that did not throw an actual exception.
  throw wihout args should ONLY be used in a catch{} to re-throw the same exception
  (for it to be handled in another catch clause)

- introduced GmshMessage callback class so that clients can easily implement
  their own message handling (see example in driverOCC.cpp)

  did in high
* added mesh generation error log summary
* removed Parallel subdir (this is now handled by the message class)
* removed Box subdir and consolidated batch processing in a single
  routine
* made List_T into a class
* reduced dependencies in Pview*.h so we can eventually add the post-pro
  interface to the public API

untabify

API cleanup: new discreteVertex, discreteEdge, ... entities (replacing
the old hacks in gmshVertex, gmshEdge, ...), the future basis of the
indepedent "null" model (cf. HAVE_NO_GEO define)

API cleanup: removed unused functions

rename transf params & remove unused ones in old structs

make clear in docs that node/elemement tags should be > 0 (and not == 0)

removed global THEM

(once more step towards nicer integration of old GEO stuff)

fix bug for ruled surfaces with holes (part 1)

Bezier curves are broken

new boundary layer mesh generator

refactored smooth value/smooth normal code into single SmoothData.* file

enhancement of gmsh Surfaces

JFR

fixed interpolation of ruled surfaces created by extrusion

fixed interpolation of trimmed ruled surfaces

are more correct)

fix interactive modification of mesh attributes

extrude edge+face (only "recombined" for now; we'll implement subdivision
into simplices "globally" later)