linux-uvc_flip updates

I've updated several times, and at the moment it works with SVN-261 of linux-uvc. If anyone has any problems with certain kernel versions, or with certain parameters compiled in, let me know. It seems to work with 2.6.27.4, but I will need to look into some delay issues I'm experiencing at 640x480.

http://github.com/dfu/linux-uvc_flip