add glutInitWindowPosition calls

progs/demos/spriteblast.c

@@ -463,6 +463,7 @@ main(int argc, char **argv)
       linearFiltering = 0;
     }
   }
+  glutInitWindowPosition(0, 0);
   glutInitWindowSize(600,300);
   glutCreateWindow("sprite blast");
   glutReshapeFunc(reshape);

progs/demos/tessdemo.c

@@ -505,6 +505,7 @@ int main( int argc, char **argv )
 
    glutInit( &argc, argv );
    glutInitDisplayMode( GLUT_SINGLE | GLUT_RGB );
+   glutInitWindowPosition(0, 0);
    glutInitWindowSize( 400, 400 );
    glutCreateWindow( argv[0] );