Add missing copyright headers

Add Contributor(s) where due.

wrong index in sanity check

Fix merge bug (well, just return en arror if trying to merge views
having different number of time steps)

pretty print build options

pretty print build options

Make headers self-contained

add progname in -info

GPL -> General Public License

License stuff

add ;

Indented all source files using utils/gmshindent

Add some indent directives

Fix some dependencies + enable GSL (so that more people test it).

This is a pretty big commit.

- The Numerical Recipes routines have been moved to their own
subdirectory: NR/

- These routines are now completely optional. Configure will
determine if they have to be compiled in (if it's a non-free version
of Gmsh) or if we should use the GSL routines instead.

- The GSL routines are there. Well, sort of. The SVD stuff works
great, but the minimization routines still need more work. The whole
infrastructure is there, though: we can already compile a fully GPL
compliant version of Gmsh by removing the NR subdirectory (or by
specifying --enable-gsl to configure).

- I also simplified the options passed to the compiler (OPTIM and
FLAGS).

That's all for today folks...

Add comment for LITTLE_ENDIAN problem

Don't use LITTLE_ENDIAN, it may be defined on Macs and cause the
colormap problems. Define and test _BIG_ENDIAN instead.

Change NODLL to _NO_DLL

Clean up VERSION_FLAGS and OS_FLAGS (use HAVE_FLTK instead of _FLTK,
remove _BLACKBOX, etc.)

New makefile system based on autoconf. Only tested on Linux right now.

Note on Combine view + save bug

Fixed a couple of typos + copyright dates

bump version to 1.37.0: system calls on Windows are now correctly implemented using the CreateProcess Windows API

Updated copyright

Enable occlusion culling by default

New occlusion culling code contributed by the guys from CERN. Disabled
by default.

Generalized the smoothing of post-processing views (quads, etc.)

Fix typos + set default jpeg quality to 100

doc update

update tutorial.html + unnamed -> untitled

Save more window positions + polish previous commit (restore defaults)

Major GUI overhaul. All options are now available in a single
window.

Add ability to draw lines as 3D cylinders. Looks very nice with our
stream lines :-)

Commit some old stuff I had lying around on my machine.

Removed unused variable.

Introduce OpenGL display lists for drawing meshes. Does not seem to
work much faster on my machine, though.

Added an option to set the number of subdivisions used when drawing
spheres (when geometry, mesh or post-processing points are drawn as 3D
spheres). You can test with:

gmsh tutorial/t5.geo -string "Geometry.PointType=1; Geometry.PointSize=8; General.SphereSubdivisions=10;"