Someone please double check that this is not bogus!

Compile XvMC. Disabled the subtitles part for that. Commented a few things. This can't be good, but at least it compiles (not link yet).

control/media_instance.c: Avoid multiple libvlc_MediaInstanceReachedEnd, by providing different events for pausable and seekable state changes. (Thanks to Jacques Boileau).

* coding style fixes (please don't do [NSString string], but use an empty constant. It's faster and nicer)

misc/objects.c: Make sure vlc_object_get won't return free-ed objects, by doing an atomic refcount decrease and object removal from the object list bank.

contribs/extras: Compensate for shortfalls in ffmpeg's svn repository.  Will submit shortfalls as bugs + patch back to ffmpeg dev team.

cmake: Try to compensate for new ffmpeg directory structure by setting HAVE_LIBSWSCALE_TREE if swscale.his found.

misc/objects.c: Print more info about what was the parent or what were the children if vlc_object_destroy() failed.

contrib/src/Makefile: Checkout CMake project into 'cmake' subdirectory, set up code for downloading cmake directly from archive for future use.

fix that flv muxing issue, and doesn't seem to cause regression. fixes
#1285. Please notify if you notice something broken after this.