* bsd_mutex.cc (msleep_cnt): Remove.

	* bsd_mutex.cc (msleep_cnt): Remove.
	(msleep_max_cnt): Remove.
	(msleep_arr): Remove.
	(class msleep_sync_array): New class to encapsulate msleep/wakeup
	thread synchronization.
	(msleep_sync): New object pointer.
	(msleep_init): Initialize new msleep_sync object.
	(_mutex): Just call msleep_sync->enter() and msleep_sync->leave() for
	thread synchronization. Improve debug output a bit more.
	(wakeup): Just call msleep_sync->wakeup().
	(wakeup_all): Whitespace fix.