* posix_ipc.cc (ipc_mutex_init): Call NtCreateMutant to make sure the

	* posix_ipc.cc (ipc_mutex_init): Call NtCreateMutant to make sure the
	access mask is correct.
	(ipc_cond_init): Take additional parameter to differ between send and
	receive event.  Call NtCreateEvent to make sure the access mask is
	correct.
	(ipc_cond_timedwait): Reset Event prior to calling WFMO.
	(struct mq_info): Split mqi_wait into two events, mqi_waitsend and
	mqi_waitrecv.
	(mq_open): Calloc mqinfo.  Create mqi_waitsend and mqi_waitrecv events.
	Make sure all synchronization objects are closed in case of an error.
	(_mq_send): Wait for mqi_waitsend event.  Signal mqi_waitrecv event.
	(_mq_receive): Wait for mqi_waitrecv event.  Signal mqi_waitsend event.
	(mq_close): Close mqi_waitsend and mqi_waitrecv events.