Updated LAV Filters to 0.60.1-42-37d1da3 (custom build based on 0.60.1-37-39b4b8d)

Important changes:
 - Updated ffmpeg library.
 - LAV Splitter: Some WAV files were incorrectly detected as DTS (fixes #4057).
Update translations from Transifex:

 - Basque
 - Chinese (simplified)
 - French
 - German
 - Greek
 - Hungarian
 - Japanese
 - Polish
 - Russian
 - Slovak
Simplified Chinese: fix missing tab.

This commit fixes #4058.
Workaround a crash in the math library for x64 builds.

See http://connect.microsoft.com/VisualStudio/feedback/details/811093

It occured when the CPU supports FMA3 and support for AVX is disabled in the operating system.

This commit fixes #3999.
Language menu: Ensure "Language" always appears in English in menu entry.

If "Language" doesn't appear in the translated string, "(Language)" will be appended automatically.