[Csgl-users] CsGL update

[Lloyd D. <ll...@ga...>]

  a.. all 1.1 OpenGL & GLU call now implemented.
  b.. correct (& safe) implementation for the 2 provided OpenGL extension.
  c.. there is a basic doc provided (mainly describing C++ object now).
  d.. the webdemo work locally, launch webdemo.html in <csgl>/examples/NeHe.