output solver errors+warnings in red, too

add 1 more verbosity level; bump default to 3

reorganized Msg() a little ("a la getdp" + colorize solver and direct messages)

- only save the options that differ from the default values (unless we
  explicitly ask to save everything)

- tweak the auto doc routines

use abort() instead of exit() when we really want to exit *now*

Save position of solver and context windows

Create temporary and error files in home directory to avoid file
permission issues (most notably on Mac OS X, when launching Gmush
from the Finder)

New post-processing range mode to adapt the scale for each time step (i.e.,
min/max is time step dependent)

Cleaned up the whole Include/Merge/Open mess (removed the ugly
yyin/yyname tables in the parser, made the Merge routine reentrant
+ uniformized all the INFO/STATUS messages).

This should fix a nasty side effect from this morning's
commit (wrong yynames when doing multiple merges in the same
file).

Trying to fix compilation problems on old DEC stations (missing
vsnprintf and snprintf functions).
)

Improve UI responsiveness and fix the "jumping" rotation problem by
not checking for pending events during STATUSxN messages.

Fix buffer overflows

Fix whitespace in copyright headers

Indented all source files using utils/gmshindent

Add some indent directives

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

Updated copyright

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

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>

Msg) firing a 2nd draw() before the fir(st has finished... This is a
general problem with our "pseudo-threaded" (i.e. putting many
WID->check() calls) approach... I added a new lock in draw() (we
already have one in Generate()), but this is pretty ugly.

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).

Menu reorganization
Typosx