rem: send_message(const KMessage *message, const messaging_target *targets, int32 targetCount)
add: send_message(const void *message, int32 messageSize, const messaging_target *targets, int32 targetCount)
context: send_message(const KMessage *message, const messaging_target *targets,	int32 targetCount){	if (!message)		return B_BAD_VALUE;	return send_message(message->Buffer(), message->ContentSize(), targets,		targetCount);}