progs: Port most of the demos to glew.
A couple of test weren't ported due to glew breakage -- it undefines
GLAPIENTRY.
diff --git a/progs/demos/fplight.c b/progs/demos/fplight.c
index fb510cc..c297354 100644
--- a/progs/demos/fplight.c
+++ b/progs/demos/fplight.c
@@ -10,7 +10,7 @@
#include <stdio.h>
#include <stdlib.h>
#include <math.h>
-#define GL_GLEXT_PROTOTYPES
+#include <GL/glew.h>
#include <GL/glut.h>
@@ -273,6 +273,7 @@
glutInitWindowSize( 200, 200 );
glutInitDisplayMode( GLUT_RGB | GLUT_DOUBLE | GLUT_DEPTH );
Win = glutCreateWindow(argv[0]);
+ glewInit();
glutReshapeFunc( Reshape );
glutKeyboardFunc( Key );
glutSpecialFunc( SpecialKey );