Fixed:

Fixed:
 * GLUT_SINGLE now should behave more or less correctly.
   Thanks to Brian Paul!

 * Sleeping is now cognizant of outstanding redisplays.

 * Fractals_random has been restored more or less to as-before, save that
   it uses the more minimal glFlush() rather than glutSwapBuffers().
   glutSwapBuffers() was only required when freeglut was incorrectly
   handling promotion to double-buffering.

git-svn-id: svn+ssh://svn.code.sf.net/p/freeglut/code/trunk/freeglut/freeglut@202 7f0cb862-5218-0410-a997-914c9d46530a