Removes the old VLCFSPanel, and references to the
source files from the makefiles, potfiles and
the Xcode project.

The old VLCIntf macro is deprecated, getIntf() should be used
instead.

This renames the playlist related class files to match the class name,
which makes it easier to find the which belongs to a certain class and
follows common Cocoa/Obj C file naming conventions.
Signed-off-by: Felix Paul Kühne <fkuehne@videolan.org>

macosx: privatise instance variables and resolve class dependencies on internal implementation details

This also cleans up the images structure inside the project.

Most of them are memleaks, uninitialized values, unused code
and type mismatches (float / int vs. CGFloat, uint vs. int)

This removes VLCThreeImageDropView and thus duplicated
D&D code.

No functional change.

Behaviour is now the same as the buttons in main window

close #9512

This patch doesn't stop you from going above the limit using the hotkeys or the Apple Remote

... to allow toggling between playlist and video view in lion
fullscreen mode.

close #8496

And get rid of the horrible find-input-callback.

Now, we have two classes (instantiated from the xib file for each window)
with controls bar stuff:
- VLCControlsBarCommon holds all code common for main and detached window
- VLCMainWindowControlsBar adds code specific for the main window bar

With that, we can avoid all these redundant code for o_detached_*, furthermore
this decouples all detached window control bar stuff from MainWindow.m.

The objects can be accessed through the controlsBar method.