Updated LAV Filters to 0.60.1-63-b772547 (custom build based on 0.60.1-58-879fe91)

Important change:
 - LAV Video: Fix artifacts on some H264 streams with both software and DXVA decoding (reported upstream as https://trac.ffmpeg.org/ticket/3386).
DVBSub: Fix a stupid parsing bug leading to the wrong page being used.

There is absolutely no reason to copy the region list from the previous page since that means we would just be displaying the old page again instead of the updated one...
DVBSub: Ensure no region is lost to avoid partially rendered subs.

Some regions can be received before they are actually needed. We use to ignore them but we shouldn't have.
Update Changelog.txt
Fix: x86 and x64 versions conflicted over file associations.

4f465cf8b81f1da800b1bfc57cc48e317d24fbb5 was incomplete for Vista+.

This commit fixes #4064.
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.