sync laptop and acm machine

Add -DHAVE_FLTK when we do "make depend"

Fix whitespace in copyright headers

Add missing copyright headers

Add Layer on Extrude Point (phase 2 -- remove duplicates)

Added Layer option for Extrude Point

Don't append the ".geo" extension anymore if the file name is not
recognized.

Make headers self-contained

Add add these, too.

Indented all source files using utils/gmshindent

Use MergeProblem instead of ParseFile in MergeProblemWithBoundingBox

Slightly change the way we compute the bounding box during OpenFile
(not MergeFile), so that opening a file containing both a
geometry/mesh and a view works as expected.

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...

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

added ReadImg.* into Graphics
modified Makefiles (now libfltk_images.a is used)
This is a beta version of image loading with gmsh

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

Better error msg

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

Updated copyright

box of e.g. a view when merged in a script

Fix make source

Simplify error messages in parser a bit and change msg from ERROR to WARNING for list of shapes (less annoying when doing generic transformations, e.g. of points). Noticed this thanks to Genot Jean-Sebastien <JSGenot@HerouxDevtek.com>

compilation directives (cf. __APPLE__), were to rename the type
ColorTable to GmshColorTable and the function Palette to Palette1,
in order to avoid conflicts with Apple's QuickDraw.
Note that HFS is case-insensitive, which requires to have a fltk lib
name otherwise than libfltk.a (in the Mac version, the GL part is separate
anyway, so I've been using libfltk_base.a and libfltk_gl.a).