jhb 22915435df Change callout_stop() to return an integer. If callout_stop() succeeds in
removing the callout entry, return 1.  If callout_stop() fails to remove
the callout entry because it is currently executing or has already been
executed, then the function returns 0.  The idea was obtained from BSD/OS,
however, BSD/OS changed untimeout(), and I've just changed callout_stop()
to be more conservative.

Obtained from:	BSD/OS
2001-08-10 21:06:59 +00:00
..
2001-07-22 19:55:05 +00:00
2001-08-07 15:48:51 +00:00
2001-06-14 11:05:01 +00:00
2001-08-10 04:51:19 +00:00