This removes the build-time and install-time dependency.

Close #6116

This enables running VLC to run on a kernel that does not support
version 5.5 of the Linux DVB API (i.e. Linux < 3.3), even if VLC was
compiled with more recent kernel headers.

Unfortunately, this is of limited use. In practice, the running kernel
version is more likely to be newer than the kernel headers, than to be
older. In that case, VLC will print an explicit error.

This reverts commit 6afa23b2.
This was breaking length computing, thus breaking seeking.

Conflicts:

	modules/access/bluray.c

This requires Linux DVBv5.5.

This will be needed for proper DVBv5.5 support.

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