This changes flattened /links output to disclose less
routing information and slightly increases memory "leak"
from server names that do not come back anymore.
If we are connecting outward to a server, check if the
server name they sent is the same as what we tried to
connect to. Previously such a connection could succeed
if there existed connect blocks with the same IP and
passwords for the other server name.
server name existed taking hostmasking into account
and just check with find_server(); admittedly
this checks if the name is a SID but that's not
a real problem.
