don't require gl2ps

missing line_width/point_size calls

clarify help

forgot to recompute the bbox

add a comment around a test copied as-is from the old Gradient plugin

merged Plugin(Lambda2) and Plugin(Gradient) in a single plugin, so that
we free up Plugin(Gradient) for future use

- plugin callbacks now draw their stuff until run/cancel is executed (so we
  manipulate the scene with the additional data displayed)
- made plugin code much shorter
- simpler defaults for StreamLines, CutGrid and Evaluate

draw points instead of grid

add callbacks to draw grid + fix interval definition

add callbacks to draw grid

new Plugin(Probe) to query the value of a view at a single point

new Plugin(Remove) to selectively remove parts of a view (e.g., all
the text strings, all the scalar lines, etc.). Very useful to clean up
maps after cuts, or to reset comment strings.

- new alternative Draw_String function taking a "style" argument (used
  only for font size at the moment)
- new Plugin(Annotate) to add simple text strings to a view

We cannot use _quad as a class name: gcc 2.95 uses it internally

fixed "gcc -pedantic" warnings

- Replaced the general eigenvalue solver with a version from Laurent's
MatLib code (a bit more stable thanks to floating point checks with
adjustable tolerance)

- Added a solver for symmetric matrices (again from Laurent. Thanks, dude!)

- Added a small driver for 3x3 matrices, that selects the appropriate
solver (sym/nonsym) automatically

add an elementFactory to simplify the tests + new "getNode" fcts

typo

renamed Plugin(PrincipalStresses) into Plugin(Eigenvectors) + provide the
option to disable the scaling by the associated eigenvalues

typo

fix div. by zero

Don't call EigSort automatically in EigSolve, as it could screw up the
ordering of complex eigenvectors

msg

make the EigSolve interface allow for the solution of eigenvalue problems
of arbitrary size (instead of limiting to 3x3)

new plugin to compute the principal values of a tensor field

- Moved all the Raise[][] stuff out of the drawing routines, and into
  Graphics/Post.cpp

- New 'generalized raise' mode (can use arbitrary expressions, possibly
  with external data sources, to raise/offset views dynamically). Original
  patch by Nicolas Tardieu. Merci Nico!

- moved the AdaptiveView stuff in its own header file

- fixed small bug in IsoSimplex (when Raise != 0)

- fixed small memory leak in Plugin/Extract (when one or more
  expressions are invalid)

fix help string

- fixed CTX.post.list error in new plugins

- cleanup integrateLevelsetPositive in Integrate.cpp

- re-indent

- Added a bunch of colormaps from:

  Color Theory and Modeling for
  Computer Graphics, Visualization,
  and Multimedia Applications

  Haim Levkowitz
  University of Massachusetts Lowell
  Lowell, Massachusetts, USA

- Increased max size of colormap to 1024

- Small cleanup in parser+plugin

This patch fixes an old design flaw in the post-processing module,
namely that we used a list of Post_View objects instead of a list of
pointers to Post_View objects in CTX.post.list.

This had many annoying consequences, in particular the fact that we
needed to be extra careful every time the list was reallocated (as
pointers to the list elements would become invalid).

I tried very hard to change the code everywhere it should be changed,
but I might have missed something. Please let me know if you see
anything suspicious (like a crash when you duplicate/remove/combine/...
post-processing views).

fixed FPE in computeLevelsetPositive when SUMABS=0 (still not sure what
this stuff is useful for, though :-))