Merge pull request #1163 from xanadu/master

add support for download YouTube 3d format of 3d content
[youtube] show which formats are in 3D with "-F" and in the format field
[youtube]: new algo for length 83 (fixes #1164)
release 2013.08.02
[youtube] don't crash in verbose mode if 'ad3_module' is not defined in age protected videos (fixes #1159)
Add an extractor for Ooyala (closes #833)

Only works for some sites, it doesn't work for videos that use a f4m manifest
[myvideo] add support for videos that place the video info inside www.myvideo.de/service/data/video/{id}/config (fixes #616)
[arte] Prefer vídeos without subtitles in the same language (fixes #1173) and fix crash when there's no description
[arte] add support for downloading from http://liveweb.arte.tv (fixes #1014)
Add an extractor for videofy.me (closes #1171)

Also modify find_xpath_attr to accept values with spaces like for id="HQ on"
Add an extractor from muzu.tv (closes #1177)
[collegehumor] support urls in the format www.collegehumor.com/e/{video_id} (fixes #1179)
More informative error
Updated the 84 length signature decryption

Updated the right 84 length signature decryption 06.08.2013
Encrypted sig 87 broken again (fixes #1200)
Merge commit '7a4c6cc92f9ffec9135652a49153caffa5520c29'
Remove youtube sig tests

The signature algo changes too often for the static test to make sense.
Merge remote-tracking branch 'patrickslin/patch-4'
release 2013.08.08
Merge pull request #1189 from cyisfor/master

More informative error