changed the Curl_connethost() proto again

name resolving, as that should be the *ONLY* section in libcurl that may
take a while in a synchronous call.

valid time. we now store the filetime as a long to know for sure it can
hold -1 (there exist some unsigned time_t cases)

same socket and it was available from the passed-in struct anyway!

renamed all static ^_ftp_* functions to ^ftp_, prefixing with underscore is
not nice

properly match those cookies in subsequent requests

RETR fails, this corrects it.

and providing me with test-certificates that helped me nail the problem with
curl not discovering with a bad certificate was used.

the given URL has no protocol:// part and the Location: redirect contains a
:// section

have a protocol:// part did wrong