Update ZenLib to v0.4.29 r458.
Update MediaInfoLib to v0.7.69.
Move old changelog entries to Changelog_old.txt.
Remove unneeded cppcheck inline suppressions.
Compilation.txt: Update MSYS/GCC pack.
External PGS subtitles: Fail nicely when a file can't be opened.

This commit fixes #4363.
Fix drag-and-drop from some applications.

Drag-and-dropping a downloaded file from Chrome failed for example.

This commit fixes #3036.
Update translations from Transifex:

 - Basque
 - British English
 - Catalan
 - Chinese (simplified)
 - Croatian
 - French
 - Galician
 - German
 - Greek
 - Italian
 - Japanese
 - Korean
 - Polish
 - Portuguese (Brazil)
 - Slovak
 - Spanish
 - Tatar
 - Turkish
 - Vietnamese
Fix GCD computation for negative values and support all integral types.

Using the GCD function on negative numbers caused an infinite loop, instead return the greatest positive common factor.

Fixes #4285.
EVR-CP and Sync renderers: Correctly compute the aspect ratio.

Use 64-bit unsigned integer to avoid overflows.

Fixes #4285.
Updated LAV Filters to 0.61.2-36-a6bd936 (custom build based on 0.61.2-31-0c8c081)

Important changes:
 - LAV Video: Fix some performance regressions introduced in v0.61 (mostly visible on old operating systems like Windows XP) (fixes #4357).
 - Use Win32 threads instead of pthreads.
 - Updated ffmpeg and libbluray.
Fix some CPPCheck warnings.
Thumbnails: Show an error message when the thumbnails would be too small.
Don't update the last window position when the option is disabled.

Avoid always modifying the settings for those who sync them.

Fixes #4377.
VSFilter: Add Dark Souls 1 to the blacklist.

http://forums.steampowered.com/forums/showthread.php?p=35530514
Suppress compilation warnings.
Exclude MSYS folder
Rewrite subtitles downloading framework

[x] Respect language order on auto download. The process will download additional subtitles when the language found is of higher priority.
[x] Implement ignoring files containing a list of words
[x] Allow loading property page independently of MainFrame
[x] Don't start search and download automatically when auto-load subtitles is turned off.

Implement default sorting based on language selection, hearing impaired selection and internal score.

Move subtitles internal list to SubtitleDlDlg to avoid the need of synchronization.

Use native dialog box for prompt for credentials
Fix crash on non - CRenderedTextSubtitle subtitles.