That's what the old interface did

See #4455. The lua interface merely polls, reads and writes on file
descriptors 0 and 1, and expects it to work. There is no support for
spawning a console and redirecting/getting file descriptors to it, and
file descriptors are mixed with socket descriptors and polled, which
won't work on windows. Until something is done about it, revert to the
old rc interface

If the playlist file says HTTP, we really should not try MMS over TCP
or MMS over UDP, but only MMS over HTTP.

First this is a fork of the old intel code, and then we only have one
upnp module now

This commit does not add support for multiples hotkeys though.

mux-ts-use-key-frames is not a key!

(Beats me why GCC did not warn about this one)

Names are looked up when starting VLC.
Codes are looked up when editing the preferences.
I prfer to optimize the VLC startup.

Hotkeys are separated by tabs. I would have allowed white spaces, but
they are found in some media key names :-(

We have had a replacement for quite a while already.

This avoids storing unmapping actions. More interestingly, this will
enable multiple keys per action.

We cannot fully privatize this, as the global hotkeys plugin read the
list of actions through the public LibVLC instance pointer.

'scale' is vlc autoscale not a value
snapshot could have meant thumb size
directx wallpaper is win32 only
just show desktop feature, not tech details to end user