XRF peers can now be defined in the xlxd.interlink file,
allowing linking of a local module to a remote using
the DExtra protocol. XRF peers are shown in the peer list,
along with their XLX siblings.
Changes affect only how the reflector initiates the link,
as xlxd already supports incoming DExtra links.
Each peer is associated internally with a remote client,
so code changes include distinguishing peer connect acks
from non-peer ones and handling timeouts differently for
peer clients to clean up the peer data structure.
The DExtra disconnect packet is now properly implemented.
Antony Chazapis
49ba30ca25