Implement drag and drop for .m3u playlists
Merge branch 'master' of github.com:badescunicu/mixxx into drag_and_drop
Unify text in Debian control files.
Support for .pls and .m3u8 extensions
Prevent exception running on a tarball export.
A bit of coding style improvement
Merge pull request #87 from badescunicu/drag_and_drop

Drag and drop m3u playlist into sidebar
Unregister WSpinny for vinyl control signal updates upon destruction. Fixes Bug #1242640.
Add missing includes of Qt headers to start the migration from qt4 to qt5.
Use Qt::WindowFlags instead of the deprecated Qt::WFlags.
Fix improper unlock of mutex in ControllerManager (triggers a segfault with qt5).
Get rid of explicit shutdown of ControllerManager and do it in the destructor.
Get rid of use of TRUE and FALSE.
Use Q_WS_WIN instead of Q_OS_WIN since it is deprecated in qt5.
Update to the latest version of ByteArrayClass from the QtScript examples.
Guard Qt >=4.7.0 logic with ifdef.
Change dropAccept and dropAcceptChild to accept QObject sources instead of QWidget (needed for qt5 migration).
Fix one more use of FALSE.
Remove double-include.
Explicitly include <QtConcurrent> due to qt5 modularization.