idString = [NSStringstringWithFormat:@"IDENTIFIED WITH %@ AS %@",plugin,hash];
// there are three situations to cover here:
// 1) host added, parent user unchanged
// 2) host added, parent user password changed
// 3) host added, parent user is new
if([[user parent] valueForKey:@"originaluser"]) {
// 1 & 2: If the parent user already exists we always use the old password hash. if the parent password changes at the same time, updateUser: will take care of it afterwards