Close #4177

Signed-off-by: Jean-Baptiste Kempf <jb@videolan.org>

Signed-off-by: Jean-Baptiste Kempf <jb@videolan.org>

pl_Hold() assumed the playlist was already created.
pl_Release() does not solve any problem. Playlist synchronization is
done with the playlist lock, while playlist deletion must anyway be done
after all interfaces, services and other threads are joined.

Introduced by [ca17039c]
(cherry picked from commit c543a40d)
Signed-off-by: Jean-Baptiste Kempf <jb@videolan.org>

(cherry picked from commit ca17039c)
Signed-off-by: Jean-Baptiste Kempf <jb@videolan.org>

Nibs will be added later on. No user-visible change as of yet.

macosx: get rid of the infamous 'get' prefixes everywhere and finally respect Cocoa's naming scheme here

This improves readability a lot and prevent us from reinventing the wheel.

Missing some cases that I could not test.
Also ffmpeg/chroma.c is locked, so I can but leave it broken.
Fix is for the remaining modules is obvious and the issue is easy to detect.

macosx: added an option to automagically save the equalizer status and its settings (default enabled). Code cleanup.

    - removed <10.3 support in the preferences' code
    - added preliminary support for Obj-C 2.0 / Garbage Collection
        - needs to be enabled manually in intf.h for now and is restricted to future Darwin release
    - updated various copyright dates to approbate values
    - configured the source tree in the Xcode project for future Xcode releases
    - finally renamed the Xcode project to the correct bundle extension

(da big courmischage)

* Fixes initialization when a preset is saved in the prefs or provided from command line. Could be cleaner, but it seems at least to work.

* equalizer.m: use preset_list_text instead of preset_list when creating the popup-entries to enable l10n of the presets
* MainMenu.nib: made the equaliser's popup a wider so it fits all l10ns