progs/demos: fix glut initialization calls

Remove glutInitWindowPosition() calls to play nicer with window managers.

Move glutInitWindowSize() calls before glutInit() so the the default window
size can be overridden by the -geometry cmd line option.

progs/demos/winpos.c

@@ -96,9 +96,8 @@ static void init( void )
 
 int main( int argc, char *argv[] )
 {
-   glutInit(&argc, argv);
-   glutInitWindowPosition(0, 0);
    glutInitWindowSize(500, 500);
+   glutInit(&argc, argv);
    glutInitDisplayMode( GLUT_RGB );
 
    if (glutCreateWindow("winpos") <= 0) {