make sure redirect starts with /. This also requires a tweak in
check_path, in the case we go open_file -> send_dir -> open_file ->
check-path and the path starts with a slash.
the new logging code was crashing if the client didn't support SNI or
if required an unknown vhost: this because we short-circuit in
handle_handshake to an error, so c->iri isn't populated yet (we don't
even read the request).
fixes#1
was probably added to distinguish between AF_INET and AF_INET6, to use
different functions for logging. But it wasn't really used, and now
we use getnameinfo anyway.
err/warn is not available on some systems (unfortunately!) and in any
case don't play well with our daemon mode (that closes std{in,out,err}).
Use our fatal that is daemon-aware.
cgi.c wasn't really needed; it better to group all the server related
functions together, cgi or not. Now gmid.c contains only startup and
utility code.