
SIGUSR1: IBSng will reopen all it's log files, useful after rotating logs

SIGUSR2: IBSng will recreate the bw manager tree. All user leaves would be lost by this action
	 this should be done only in bw manager init script, when bw manager is booting up


WARNING: Signal Handlers are set AFTER IBSng initializations, and during initialization, 
         they're used for other purposes.
