- only delete selected physicals (instead of all of them; for philou)
- move "save" button in visibility window
- small logic fix in mesh draw

fixing build without GSL

added gui for OCC healing

fix for youngae's new iv files

(They use 'keyword[' instead of 'keyword ['. Sigh...)

set min num pts=2 for OCC circles (fixes bug in Mblade.iges)

simplify selection colors (keep only one) and add 3 highlight colors

- fixed missing return value in OCCVertex::reparamOnFace

- added code to highlight orphan entities (dave's idea)

- added gui for incomplete second order elements

- removed ugly static variables in 1d algo

- made sure we remove all 2d order vertices before generating new ones

- fixed infinite loop in edge loop creation (when the loop is wrong, just print
 a message and abort)

- introduced options to control healing of OCC models

removed gobal meshSize in GMODEL: for now use CTX.lc, which is correctly
updated when multiple files are merged

fix logic for 3d delaunay

- added exception to GPL for triangle/tetgen
- fixed some command line switches
- added option to antialiasing OpenGL rendering

hybrid extruded/unstructured from ruth

- 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)