Subtitle renderer: Fix a typo introduced in 3244957f4563575d22bf109de27a703558611b19.

It had no effect on the output but a slightly slower code path was used.
Subtitle renderer fix: shadow was not drawn when border was very thin.

The issue was introduced in 19fb30b3effa1a8d221240ef42e47aaf8bf9e495.

This commit fixes #2588.
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.
Update translations from Transifex:

 - Czech
 - Galician
 - Malay
 - Portuguese (Brazil)
 - Swedish
 - Vietnamese
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.
Language menu: Use submenus to group language names starting with the same character.
Update translations from Transifex:

 - Greek.