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- libvlc shouldn't call vlc-android methods from introspection. Furthermore,
  getValueWrapper was not working since util.getValue() was gone.

- android-vlc shouldn't store translated values into database (what happens
  when user change language ?).

- bump DB_VERSION to 12 in order to remove translated values (and don't compare
  null with translated values).

When playing a song with no cover, the previous song cover was displayed instead of VLC icon

Queue Artists/Albums/Songs/Genres lists refresh, and execute the currently diplayed list refresh in first
This should speed up AudioBrowser display

To not destroy fragments, I add them to the backstack, but I don't use it.
Only to retrieve fragments by tag.
That's why we finish() on back pressed if no other action is planned.

I don't see any other solution for now, documentation explains that fragments not in backstack are destroyed once replaced.
An alternative could be to change the way fragments are handled, and don't use ft.replace() anymore.

After a few testings it seems to work pretty well, and no extra memory is needed

This will be needed to avoid crash on samsung devices

This reverts commit a8fd5796.

you have to free char * returned by libvlc_media_get_meta.

Switch between Play and Pause is already a transition