- couple of aesthetic changes in Options->General

- tentative fix of home directory problem on Windows95/98

nice line extrusion example from jonasforssell@yahoo.se

explain the new Layer region stuff

- made Layer's region numbeing behaviour consistent between
  lines/surfaces/volumes

- force mesh.changed when we modify surface_edges/faces display

add @. after color specs in Fl_Browser: otherwise strings that start
with a digit don't get printed

fix bug in UNV format introduced in 1.53 (BEAM/BEAM2 require special
case in print_record)

1.53 release

change force_buffer_flush prototype

comment to explain the blending modes

quick hack to implement "fake transparency" as in xpost

Test if we have OpenGL 1.2 to use GL_RESCALE_NORMAL. If not, use the more
expensive GL_NORMALIZE. Thanks Dave!

disable the perspective button for now

forgot to set the default bitmap

added small button to switch between perspective and orthographic
projection modes

removed the "simplices only" remark for the 2nd elts option

slightly better computation of the z-scaling in lasso zoom to avoid
normal clamping

added a couple of debug msgs to track how many elts we have in the
vertex arrays

fix for the "per time step" min/max

- fixed out of bound access in OctreePost for multi-step views

- added dView option to StreamLines plugin to interpolate an
  arbitrary scalar view on the stream lines

make install-mac

- set VectorType to Displacement in Plugin(StreamLines)
- shout when a plugin option/name does not exist

removed old unused options

set mesh.changed=1 after a Read_Mesh()

BoundingBox

new BoundingBox command to force the computation of the bounding box (useful
when there is no geometry and we don't include/merge any views)

- don't call glNormal unnecessarily

- do The Right Thing (TM) with the light position, i.e., set it
  *before* we multiply by the modelview matrix. It's much easier
  to achieve predictable lighting results like this: (-1,0,0)
  simply means "light from the left", (0,1,0) means "light from
  the top", (0,0,1) means "light from the front", etc.

- fixed orientation of boundary of post tet

- added new LightTwoSide option: with this turned off, we achieve
  roughly the same performance as SceneViewer on large data sets, i.e.,
  around 1 million triangles (SceneViwer is the "industry standard"
  OpenGL viewer from SGI). Nice... ;-)

force view->Changed when we change the light setting

- generalized vertex arrays to handle quads

- added missing Ellispe ... Plane ... in parser

simplified vertex array logic