This should fix bluray playback on windows.

note that this patch includes a hack to revert to the 'Default' state correctly

Required for metadata support.

macosx: allow to hide the drop zone while the playlist is empty using an option-click on the playlist toggle button (refs #6213)

This fixes crash with BD-J menu, if libbluray isn't built with java
support.

Only fail if user explicitly enabled x26410b option and suitable libraries
are not found.

it behaves this way now:

- no video => toggle window minimization

- active video in main window => toggle playlist / video

- active detached video => toggle window minimization

- active video in main window, option click on button => toggle window minimization

Signed-off-by: Hugo Beauzée-Luyssen <beauze.h@gmail.com>

the playlist item automatically reveals the main window now, in case it is hidden. the close item correctly closes the detached video output window now, when using the gray ui style

Empty function does not mean unknown guid

As pointed by fenrir, this is already handled by the core.

Signed-off-by: Hugo Beauzée-Luyssen <beauze.h@gmail.com>

Signed-off-by: Hugo Beauzée-Luyssen <beauze.h@gmail.com>