Updated LAV Filters to 0.59.1-22-a6514fd (custom build based on 0.59.1-17-6da6023).

Important changes:
 - LAV Video: Fix a crash with DXVA on AMD cards when stopping playback (fixes #3601).
 - LAV Audio: Fix a crash when using old versions of the ArcSoft DTS Decoder to handle DTS decoding internally (fixes #3676).
Fix: External audio was not synced on open if restarting from the latest remembered position.

This commit fixes #3702.
Pin info: Fix misdetection of S/PDIF bitstreaming as PCM.
Update LAV Filters to 0.59.1-27-dede7ad (custom build based on 0.59.1-22-4ff4fd0).

Important changes:
 - Fix some potential issues with WMVA decoding.
 - Support some non-spec compliant MP4 files (ticket #3576).
Internal filters: Support WMV/ASF/DVR-MS splitting.

Refs #2655.
Disable internal WMV/ASF/DVR-MS splitting and WMV decoding by default.

Microsoft filters are generally more stable for those formats.

This commit fixes #3569 #3679 #3680.
Add missing GUID define for WMV splitting in cffd4fc1705172752c1c7d152f41411a9f41f20c.

Modifying the SDK header instead of ours is a bad idea...
Add a line-break in WMV internal filters tooltip for better readability.
Use Windows line endings for About dialog's "Copy to clipboard" feature.

This commit fixes #3706.
Add VS2012 update 4 version number.
Use pragma once.
Clean up structs/enums.
Update Changelog.txt.
Updated French translation.
Fix skipping to next/previous file in the folder when the current file isn't detected as a media file.

Also use a more adapted structure to hold the file list.
Update LAV Filters to 0.59.1-31-c635d2d (custom build based on 0.59.1-26-73db2ec).

Important changes:
 - Fix a freeze when changing the bitstreaming settings when paused (ticket #3688).
 - Avoid a possible crash with DXVA2 decoding.
AboutDlg: use same char count for the underline
Fix compilation of lite builds.

Use a more flexible way to define if internal filters should be enabled or disabled by default.
Updated Polish translation.
Sync mplayerc.rc.txt file.