+ * Revision 1.10 2001/06/22 19:35:58 mdw
+ * Fix a large number of bugs.
+ *
+ * Revision 1.9 2001/02/03 19:07:08 mdw
+ * Ensure that timers set to go off in the past don't case a problem.
+ *
+ * Revision 1.8 2000/03/23 20:42:08 mdw
+ * Rearrange timeout handling to avoid list corruptions.
+ *
+ * Revision 1.7 1999/12/11 11:12:17 mdw
+ * Fix comment formatting error.
+ *
+ * Revision 1.6 1999/09/26 14:28:11 mdw
+ * (sel_select): Almost pointless efficiency tweak.
+ *
+ * Revision 1.5 1999/08/31 17:42:22 mdw
+ * New function `sel_force' to force a descriptor to be `selected'.
+ *