[OpenGL] New example 'shapes.pir', testing GL 1.x / GLUT 3.x APIs
[OpenGL] New example 'shapes.pir', testing GL 1.x / GLUT 3.x APIs

* New example file examples/opengl/shapes.pir
  + Goal is to test "works everywhere" subset of GL/GLU/GLUT APIs
  + Will try to hit as much of that ancient subset as reasonable
  + First stub version (improved version of triangle.pir)


git-svn-id: 6e74a02f85675cec270f5d931b0f6998666294a3@28301 d31e2699-5ff4-0310-a27c-f18f2fbe73fe

parrot/parrot,tewk/parrot-select,tkob/parrot,youprofit/parrot,fernandobrito/parrot,tkob/parrot,tewk/parrot-select,tewk/parrot-select,gagern/parrot,youprofit/parrot,tkob/parrot,gagern/parrot,tewk/parrot-select,FROGGS/parrot,youprofit/parrot,fernandobrito/parrot,FROGGS/parrot,gagern/parrot,youprofit/parrot,FROGGS/parrot,FROGGS/parrot,gagern/parrot,fernandobrito/parrot,youprofit/parrot,parrot/parrot,fernandobrito/parrot,parrot/parrot,youprofit/parrot,gitster/parrot,tkob/parrot,tkob/parrot,tewk/parrot-select,gitster/parrot,gagern/parrot,parrot/parrot,tewk/parrot-select,gagern/parrot,parrot/parrot,youprofit/parrot,FROGGS/parrot,fernandobrito/parrot,gitster/parrot,gitster/parrot,FROGGS/parrot,gitster/parrot,gitster/parrot,tkob/parrot,tkob/parrot,fernandobrito/parrot,youprofit/parrot,tewk/parrot-select,FROGGS/parrot,tkob/parrot,gagern/parrot,FROGGS/parrot,gitster/parrot,fernandobrito/parrot