Log Message:
Update youtube-dl to 2015.05.04. Patch from Leonardo Taccari in PR pkg/49887.

Changes:
2015.05.04:
 o Various fixes for existing extractors.

2015.05.03:
 o Add extractor to [foxsports]
 o Remove [Grooveshark] extractor (grooveshark.com was shut down on 2015/04/30)
 o Add new extractor [baiduvideo]

2015.04.28:
 o Various fixes for existing extractors.

2015.04.26:
 o Add support for [gfycat]
 o Add extractor to [Senate]
 o Various fixes for existing extractors.