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Now media isn't cloned from on vlcmedia to another, since they share
options. A new one is creater from scratch.

Note that this will (probably) brake moving backward in the render preview.

Avoided segfault when playing track two times

Removed debug.

There's still a size/chroma/pitch/something_else problem, but this should work
soon :)

Removed useless stuff from VLCMedia

Library is now made of a GUI representation, and a frontend/backend,
that communicate with slots/signals
Also, VLCException must now be catched using the macro
CheckVlcppException, so that it prints out file and line of the error.

Please do not use 'this' pointer when it isn't required.

Added a tiny class for image handling
Added a Media class that will be the entrypoint for most of the timeline video
stuff
Code cleaning / reorganisation

Sorry for the big svn-like commit :p

Added a tiny class for image handling
Added a Media class that will be the entrypoint for most of the timeline video
stuff
Code cleaning / reorganisation

Sorry for the big svn-like commit :p