- new option Geometry.Tolerance (or -tol on the command line) to set the
tolerance for the old CAD engine, for OCC healing and for STL import

- removed more unused options

- reimplemented subdivision of extruded meshes
- fix indent + unused var + gcc warnings all over the place

better names for mesh algo #defines

removed most unused, untested or non-working stuff in old CAD code

- bug fix: need to create temporary bounding box and compute CTX.lc
*during* parsing step until we fill the new db on the fly

(Some geo transforms in the parser use CTX.lc for tolerences. But
CTX.lc was always equal to 1 since we only do a SetBoundingBox on
GModel after parsing!)

- cleanup spline interpol (remove duplicate code)

cleaned up InterpolateSurface/Curve (get the negative curve dircetly in InterpolateCurve)

reintroduced fix for transfinite mesh on 3-sided transfinite surfaces: the problem was still there

fixed interpolation of ruled surfaces created by extrusion

fixed interpolation of trimmed ruled surfaces

fix gcc warnings

- removed ugly fix in transf mesh of tri surf
- use MFaceVertex params in boundary mesh if available
- cleanup intro chapter in docs

are more correct)

fix err msg

revert last patch (the behaviour is a bit more complex than that, since we
actually really discrard the physical definitions when we do "save all"), and
just use better wording instead

reverse gui logic for "save_all" (IMHO much easier to understand this way)

Added basic support for physicals in all mesh formats that ignored physicals
before (stl, vrml, mesh, bdf, pos). This way we can use the physical mechanism
to only save parts of the mesh (like we do it now for msh and unv files).

Next step will be to add an option to only mesh the physicals (and their
dependencies). This is very useful for large models and/or for debugging.

pp

better mousewheel interaction

free vol mesh befire surf mesh

ProcessSelectionBuffer should only return true if there is actually
something returned

better integration with mac finder

remove "file_type" for open callbacks: it gives the wrong impression
that files will be treated differently depending on the choice (as is
the case for save callbacks)--this is not true

pretty print

destroy meshRep in deMeshGEdge

OpenProblem -> OpenProject
MergeProblem -> MergeFile

cleanup msg

change the logic in GenerateMesh():

- never reload the model file--we don't need this trick anymore!

- always only generate the mesh we are asked to generate (pressing
  "1D" should *always* mesh the edges; pressing "2D" should only mesh
  the surfaces, unless there is no 1D mesh). This makes the behavour
  much more predictable when changing mesh attributes interactively.

small cleanup of session/option file (don't print help strings by defaul)