MacOSX/Framework/VLCAudio: Code cleanup and use Objective-C 2.0 @property. (Patch by Enrique Osuna).

MacOSX/Framework: Updated the test project to conform with the latest changes in VLC.framework. Patch by Enrique Osuna.

MacOSX/VLC_app/VLC.xcodeproj: Create three different targets to have more grain control over the dependencies. And fix the framework installation script. Default the use of the vlc-contrib-core-framework-app Target.

MacOSX/VLC_app/VLC.xcodeproj: Work around what seems to be a Xcode bug. We can't use the VLC.framework in the Copy Phase.

VLCMediaList.m: Don't mess between node hierachical and hierarchical cached copy of the MediaListAspect.

MacOSX/VLC_app: Initial import. Big playlist still causes memory and cpu high load. Interface is ugly. Miss many functionality. But code is light. Supports multiple player. Fullscreen a-la frontrow interface (yet a bit ugly).

MacOSX/Framework: Support event collapsing, and save the media list thats own the media list aspect.

VLCMedia.m: Don't flood the event manager with unused meta change notification. Remove uneeded willChangeValueForKey: notification, as per Julien Robert suggestion.

MacOSX/Framework/VLCTime.m: Fix a segfault because of a missing retain. Create a real null time. Code simplification.