Speedups, minor bugs and SSE detection.

libtool: prefer -export-dynamic over -export-regex, -export-symbols if compiler already supports symbol visibility (gcc 4.x), this should also deprecate libvlc.sym

the media file and make them available to FreeType as memory based fonts
for subtitle rendering.

the media file and make them available to the Quartz engine for
subtitle rendering.

* download libogg, libvorbis and libtheora from our server, as their mirror is broken. Note: downloading libcddb may fail with curl and could only work with wget right now...

Mac OS X gui: Nicely keep the controller window on screen when opening the playlist. (Patch by Lincoln Ramsay <ramsay at bigfoot.com>)

Maintaining an API with this was pretty much impossible. 

Thanks to pdherbemont

New video filter to add grain to a video. This is work in progress (I'm commiting so people can test using the win32 nightlies)

Revert part of the previous commit which was wrong. (Looks like the leak is in ConvertImage when the input and output formats are the same ... fix comming)