Provider (youtube, etc) is now saved in info_dict
Fixed YouTube playlist parsing
Conflicts: youtube-dl youtube-dl.exe
Support for custom user agent
Conflicts: youtube-dl
A quick fix to #427
This can be useful because videos should also be identified by their providers since id's can be the same on multiple providers.
Support downloading Youtube videos via tube.majestyc.net
Added a few simple lines to add support for the flag "--user-agent" to pass a custom string to std_header['User-Agent'].
Conflicts: youtube-dl youtube_dl/InfoExtractors.py