lib-master: master-auth: Pass more information about the user connection to the backend in struct master_auth_request. Adds remote and local ports and security information about the connection. This changes the master-auth protocol incompatibly, so the major version is updated.

lib-master: master_auth_request_full() now supports per-request path.

lib-master: Added extensible master_auth_request_full() call. Only the API was changed, no changes to functionality.

*-login: Also increase MASTER_AUTH_MAX_DATA_SIZE and add a check to make sure it's large enough.

imap: Allow longer ID command parameters without disconnecting the client.

Renamed network.[ch] to net.[ch]. The function prefixes already started with net_ instead of network_. And icecap wants to use network.h for other purpose. :)

imap-login: Handle SASL-IR without overflowing master_auth_request's buffer.

Added support for userdb lookup to fail with a reason (many API changes). --HG-- branch : HEAD

imap: Remember if TLS compression is enabled. --HG-- branch : HEAD

Redesigned how login process passes connections to mail processes and changed related APIs. Master process is no longer in the middle. --HG-- branch : HEAD

Initial commit for v2.0 master rewrite. Several features are still missing. --HG-- branch : HEAD