= Improvements =
* Make listen(2) argument configurable: listen_backlog. This is
useful on OS'es, where system max allowed is configurable.
* Improve disconnect messages to show what username or dbname caused
login to fail.
= Fixes =
* Move fast-fail relaunch logic around. Old one was annoying in case of
permanently broken databases or users, by trying to retry even if
there is no clients who want to login.
* Make logging functions keep old errno, otherwise pgbouncer may act funny
on higher loglevels and logging problems.
* Increase the size of various startup-related buffers to handle
EDB more noisy startup.
* Detect V2 protocol startup request and give clear reason for disconnect.
