search for: append_device

I noticed that ogg123 still has its problem opening multiple devices. Here´s a patch that fixes that. I made it considerably easier by changing append_device to return the new device struct instead of the head of the list each time. This way, the options for the device are modified with the structure already in the list, instead of building up options before doing so. I also moved an fprintf because before it was printing a blank line for each device...