PlayerSeekbar: bring back hide tooltip by timeout

It was removed in 084f3ebd9cd4bddf28aa94d737ccf5a2c37ca47c
New timeout is 3 seconds, old timeout was 1 second
Prevent locking the desktop window when aero is on

Fixes #903
Update Changelog.txt.
Updated Basque translation (ticket #2890).
Add some instructions about updating LAV Filters' submodule.
Compilation: Add a workaround for possible submodule update failure.
Improve the infinite recursion detection when parsing playlists.

The parser was sometimes too strict and rejected valid playlists.
About dialog: Add back the FFmpeg compiler in the clipboard output.
Information bar: Show the chapter info for files when available.