Fix duplicated downloads from YouTube user page where watch URLs are not. Thanks to anatoly techtonik.
FacebookIE: Fix regexp to recognize videos that weren't considered.
The current regular expression is likely to match a lot of stuff, as each comment that a video has has one of those and it is not clear which one is the date of the video *upload* itself.
Fixes for the xvideos IE
We said that we were trying to extract the title of the video.
For instance, if we give it <www.xvideos.com/video1384059>, we would end up passing that to urllib2, which would complain about an unknown URL type.