any name resolved data in any curl handle struct. That way, we won't mind
if the cache entries are pruned for the next time we need them. We'll just
resolve them again instead.

This changes the Curl_resolv() proto. It modifies the SessionHandle struct
but perhaps most importantly, it'll make the internals somewhat dependent
on the DNS cache not being disabled as that will cripple operations somewhat.
Especially for persistant connections.

now have --interface working properly

connect() so that it tells to which host and what port it is about to
attempt the connection

machines!

failf("%d") without the error as argument... it would always make a weird
number get output

same name as common functions...

we check for the error state before believing we are connected in IPv6
cases

IPv6

changed the Curl_connethost() proto again