secured most of the list_pointer accesses

truncate solver name

output solver errors+warnings in red, too

fix copy/paste on mac os

add 1 more verbosity level; bump default to 3

print start time in batch mode

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

issue a small warning if we try to include or merge an unexisting file
in the parser

removed glEnable(GL_ALPHA): this is not even in the GL doc :-)

set default number of smoothing passes to 1

enable light for wireframe arrows only in fill mode

generalized Plugin(Evaluate) to work on any (even non-scalar) views

fixed small bug in colortable_diff

generalized Plugin(Extract) so that we can also create vector views

better docs

doc update for extract plugin

quick generalization of Plugin(Extract): we can now extract arbitrary
combinations of the field's components

operator is a reverved C++ keyword: operato->operatorr

save view type only in FULLRC (not OPTIONRC)

fix exportLcField for lines and quads

test case for Coherence modifying the transfinite attributes

- store the points required by the transfinite algo in a list of vertices
  (instead of surf->ipar, vol->ipar)

- generalized Coherence for these lists of transfinite points

- removed context.default_plugin

- changed the main so that we load the plugins *before* we set the
  options (this way you can save your favourite plugin options in
  .gmsh-options, too)

force flex buffer flush after an error

fix make parser on linux

don't include matheval in commercial releases

prefix all the xmath functions with "x_" : some of these are defined
in the new C++ math lib with the same names

avoid error when trying to apply a plugin to a view that has been deleted

get rid of asprintf

matheval.c -> matheval.cpp

small tweaks

save the colormap if it's different, too

don't allocate too many value inputs for the plugin windows