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- can loop over Print.Parameter and provide script using that parameter
- can preview animation

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- simplified background drawing (+added option to use jpeg/png image)
- better default clipping planes

small cleanups for 2.0.8

- tentative fix for the "mysterious" crashes on Windows:

  I think that the problem comes from the new recursive tetra
  classification, where we probably overflow the stack on Windows. The
  fix is to request a larger initial stack size through the linker.

- added option to control label saving in unrolled geo files

- only test for neg jacobians for 2D/plane meshes for now

- fixed several compiler warnings

added small warning in automatically generated opt_* files

final shortcut changes decided by Laurent

- cleaned up the octree code (renamed some files, added copyright
  notices, indented everything)

- backported JF's doc from the texinfo file into the c++ code (the
  documentation is actually generated automatically by Gmsh with
  "gmsh -doc"!)

- replaced nPoints with nPointsU and nPointsV in CutGrid

- fixed a couple of printfs + removed some unused variables

bring option docos up-to-date

Better doc for Show/Hide

update for gl2ps

Added "gmsh -doc" to automatically generate the texinfo documentaion
for all the options.