Accounts are now stored in a separate file. Previously they where somehow magically assembled from the chain ids. Now its possible to remove a account temporary by removing the account file form the account folder.
Each account could have an inbound protocol, an outbound protocol and some filters.
Mails are now associated with an account and not with a chain. This required to replace the chain id attribute by an account attribute.
Replace BMailFilter and BMailChain by a less general approach. Basically the chain had a list of filters and call the ProcessMailMessage for each filter. This made it sometime difficult to understand what is going on, e.g. sometimes a filter used information gathered by another filters. The new MailProtocol and MailFilter classes are calling more dedicated hook functions, e.g. HeaderFetched or MessageReadyToSend.
As before all MailProtocol's (plus their filters) are running in their own thread.
Cleaned up the error and status window a bit. Abstracted the interface to these windows. Should be easy to write a BNotification api back-end now.
Parsing of mail headers is much faster now. Fetching the headers of a large mailbox takes ~min and not ~hour now! Initial checkout time is in the same order like Opera. The problem was the massive use of fgets in parse_header (mail_util.cpp) now the complete header is read in one go. Furthermore, only interesting fields are extracted.
Remove some unused files, BeOS relicts... Feel free to translate the mail server and remove the own language system (headers/private/mail/MDRLanguage.h).
Sorry for the remaining old (and new) coding style issues, sometime just ignore them, to many :(
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@40397 a95241bf-73f2-0310-859d-f6bbb57e9c96
