Subtitle queue: Some subtitles could be skipped just after seeking.

This commit fixes #4745.
Fix: Tracks matching a preferred language weren't always selected correctly.

Fixes #4825.
Internal filters: Support v210/v410 raw video formats.

Disabled by default.

Fixes #4690.
Updated LAV Filters to 0.62-31-d71fa1b (custom build based on 0.62-26-a42436a).

Important changes:
 - LAV Audio: Improve the estimated duration for some MP3 files (fixes #4322).
 - LAV Video: Fix potential artifacts when decoding x264 lossless streams.
 - LAV Splitter: Support transport protocol specific RTSP URL handlers.
 - Updated ffmpeg library.
Add support for TSCC2 with the internal LAV Video
The "Tweaks" and "Advanced" option pages would not show when using the French translation.
Update translations from Transifex:

 - Arabic
 - Basque
 - Bengali
 - British English
 - Chinese (Simplified)
 - Croatian
 - Czech
 - French
 - Galician
 - German
 - Greek
 - Hungarian
 - Italian
 - Japanese
 - Malay
 - Polish
 - Romanian
 - Slovak
 - Slovenian
 - Spanish
 - Thai
 - Turkish
 - Ukrainian
 - Vietnamese
Installer: Add a Bengali translation.
Improve the command line help dialog.

Fixes #1663.
Internal filters page: Improve the context menu handling.

- The context menu can now be triggered using the keyboard.
- The context menu won't be quickly displayed before being replaced by the default context menu when right-clicking on the scroll bars.
Capture page: Cosmetics.

Reduce the visibility of some member variables and functions.
Option pages: Show a tooltip when the text of a combobox does not fit.
Add a tooltip to describe the two "fast seek" methods.

Fixes #4177.
Always use ON_NOTIFY_EX to capture TTN_NEEDTEXT message.