skins2: For Linux, correct files that cannot be loaded because of a workaround that only makes sense on Windows.

Forcefully setting a file name with lower case was inserted to solve an issue that is only true on Windows. On Linux, upper/lower case must not be tampered with.
This resulted in skins like Orangeade.vlt failing to load their fonts on Linux.

reduce latency when running many dbus commands.
(cherry picked from commit d66e529d85b9f8111f04519559abb1446e3323d7)
Signed-off-by: Jean-Paul Saman <jean-paul.saman@m2x.nl>

The text "Waiting for video..." is no longer shown be default. One has to add it to the browser plugin properties before it is shown on the plugin area.

p_playlist() -> p_playlist ???

Add missing include, fix build error

aout_TogleMute() -> aout_ToggleMute()

It will fix interoperability with live555 server.

The "Open" and "Run" functions of the interface have been changed to
  - avoid running the interface in the main thread (Windows)
  - destroy all ressources in reverse order from creation
  - a few cleanup/cosmetic things

Note that all outputs onto the same TCP port must have the same certificates.