[coLinux-devel] porting cofb to devel branch

[yin s. <sun...@gm...>]

I will start porting cofb to devel branch.

Here is the plan.
1. add necessary kernel changes within CO_VIDEO flags, so it remains diabled
by default.
2. activate covideo by removing CO_VIDEO flag
3. add changes to linux kernel patch, mainly covideo
4. add changes in user space to activate cofb

Thanks,
/Yin