Libproxy can read proxy settings from KDE, GNOME, NetworkManager, or
the environment.
Signed-off-by: Rémi Denis-Courmont <rdenis@simphalempin.com>

Revert "Remove non-sensical connect->listen transition"
This reverts commit e1b14641

Sorry about that.

Remove unneeded patch applied upstream.

Kill a "cannot pass objects of non-POD type 'class TagLib::FileName' through '...'; call will abort at runtime" warning/error on Windows.

Work-around a playlist-core bug which prevents 'intf-change' to be set on-time after the addition of new inputs.

However, this doubles the idle-CPU load, so we may to fix that in core properly..