ask more reasonnable (hum) 16Mb of stack on Win32

- preliminary work to interface more parser functions with general
  GEntities

- we can now export simple GModels as.geo files (points, straight line
  segments, plane surfaces, ruled surfaces and volumes are treated
  correctly; all non-straight-line curves are exported as splines; all
  non-plane/ruled surfaces are not exported)

- tentative fix for the unv export problem reported on the mailing
  list (fprintf() buggy on some machines??)

- new IO (both read and write) for structured grids using the NASA
  Plot3D format (for Olivier)

bug fixes in new high order element code

orientation bug in extrusion

- make it easier to build universal binaries on Mac
- remove unused arg in transform functions (an prepare the terrain for periodic meshes)

- save physicals labels when saving unrolled geometries
- fixed crash in unrolled geo save (discrete points)
- Delete Physicals now also deletes the physicals in GModel
- removed unused rules and terminals in parser
- put at least one mid-point when meshing non-straight lines
  in OCC: this fixes most of the trivial 2d meshing problems

better integration with mac finder

- re-add names in visibility broswer (will change in the future)
- shorten tutorials

redhat->rpm

TODO->doc

I won't build rpms by default anymore

truunk will be 2.0 eventually

Cygwin is GONE!

- new button under the graphic window to temporarily disable mouse
  selection (speeds-up redrawing of very large models + permits to
  rotate/zoom-in a model in selection mode even when the whole screen
  is full of selectable entities--e.g. a surface mesh)

- new "lasso" selection mode (to select entities using the same kind
  of lasso as the lasso zoom: just Ctrl+click, then drag the mouse in
  selection mode; the shortcuts are the same as for the lasso zoom)

- it is now possible to unselect entities using the middle mouse button
  (only for the creation of physicals at the moment; not sure if it's
  useful in the other cases)

- new button in visibility browser to invert the current selection
  (very useful e.g. when multiple physical entities are associated
  with a given elementary entity, in order to "peel" away the model
  when adding new physicals; cf. philou)

- changed meaning of Escape shortcut (cancel lasso or toggle mouse
  selection) + restore standard fltk Escape handling for all dialog
  windows

- updated copyright string

- new mesh label mode (coordinates); all label types are now also
  available for mesh vertices

- added option in 'Print Option' dialog to disable printing of help
  strings

- added a comment string with the date when creating a new file

- new snapping grid for adding points in the GUI

- the fltk m#@!er f*!@ers changed the way FL_CTRL/FL_META shortcuts
are treated on the Mac. This patch forces FL_META (the "Apple key") for
all Ctrl shortcuts in the menu. I think this is the way most people on
Macs would expect the shortcuts to work anyway.

- fix metis readme+configure info

include metis in the free version since we now have Karypis' approval

currently we cannot bundle Metis with the sources

moving all external code to contrib subdirectory

use the autoconf uname