Porting guide Samba 2.2.x -> 3.0

[Rainer Link]

Folks,

unfortunately I wasn't able to follow the 3.0 development nor this ML 
very closely. Does a porting guide from 2.2.x to 3.0 exist?

I've just discovered that the following code

void send_message(pstring msg) {
[..]
         unix_to_dos(msg);

         len = strlen(msg);

         if (!cli_message_start(cli, remote_machine, username, &grp_id)) {
                 DEBUG(0,("message start: %s", cli_errstr(cli)));
                 return;
         }
[..]

does not compile anymore with Samba 3.0 alpha 20, as the unix_to_dos 
function seems to be removed. Any equivalent available?

Thanks!

best regards,
Rainer Link
OpenAntiVirus.org