reset the list of trsf pnts if we redefine a transfinite entity multiple
times by mistake

played around with colors

use the partition number and not the parition index to choose the partition
color

increased size of mesh color carousel from 10 to 20

redundant

obsolete

remove the VerticesTemp hack, as it was not the main bottleneck

example to show how to extrude an external surface mesh

Removed the last bits of the "Discrete Surface/Line" stuff.

Gmsh can now simply read a .msh file, and use it as the boundary mesh
of a 3D mesh. For an example on how to do this, cf.
demos/sphere-discrete.geo.

This complements nicely the STL remeshing stuff: Gmsh can now
for example very easily be used to extrude surface meshes that
come from other tools.

fix old extrude of existing meshes

make full-quad algo work for non-plane surfaces

reorder

cosmetic

fixed full-quadrangle recombine algo:

- run globally, not for each surface
- assign entities to elements
- split line meshes
- correctly re-tag vertices as 1st order
- plug memory leaks

cosmetic

add little menu to choose the quality measure in Options->Mesh->Visibility

fixed small bug when drawing the boundary of a prism for a time step > 1

replaced ExportLCField with ExportMeshStatistics (lc + gamma, eta, rho + elem num)

fix "color mesh by partition"

make the previous commit only apply to macs

use the Apple's recommended way of detecting big endian machines, WITHOUT
using autoconf

add note to remember how to use compiled vertex arrays