fix bilibili protected video & some sohu video

* https://github.com/freeznet/Unblock-Youku/commit/4809c2ea7b49fad22fdf5e98572a539f60623851

for issue https://github.com/zhuzhuor/Unblock-Youku/issues/364

https://github.com/zhuzhuor/Unblock-Youku/pull/365
this pull is not fix the problem, bili will check cdn from http://static.hdslb.com/identify, swf player will show only if return the right cdn.

* https://github.com/freeznet/Unblock-Youku/commit/1e25ffcb212c3f6c6b574a1c1452af83e6d999e0

fix some sohu video, such as http://my.tv.sohu.com/pl/7047842.shtml

I m not sure if can solve this issue https://github.com/zhuzhuor/Unblock-Youku/issues/356