[README] Replace links to kernel.org with links to git-scm.com

Unlike kernel.org, the documentation at git-scm.com is up to date and
the rest of the git documentation is easily accessible to any git
newby.
Add support for goldenmoustache.com
[FreeVideo] Add new extractor
[wrzuta] Fix audio extension lookup (Closes #4156)

Also, replace deleted test case
[wrzuta] Fallback to mp3 on unknown media type (#4156)
Fix MTV/GameTrailers "Bad Request" error

Bugfix for bug #4123 & #4153
release 2014.11.12
[ted] Extract duration (closes #4155)
[YoutubeDL] Fix bug in the detection of formats that don't contain video (fixes #4150)

If the format requested was not available, we called the method '.get' in None.
release 2014.11.12.1
[bandcamp:album] Fix test case
[myspass] Modernize test case
[youjizz] Modernize (#4131)
[test_youtube_signature] Fix import

Broken in commit 8c25f81beea169c9d6540eea1a6f71dc045da6ed
[byutv] Update test
[allocine] Update test
[abc] Update test case

Old video has expired.
[YoutubeDL] guard against strange sys.stdouts
Merge remote-tracking branch 'michael-k/links'
[funnyordie] Remove test md5sum (Fixes #4113)