[Kst] extragear/graphics/kst/plugins

[Brisset, Nicolas]

>   Those license and copyright issues need to be fully 
> addressed quickly.  
It's just that I don't know how it should be done. I included "GNU GPL
v2+" in all relevant files, but it seems the syntax was not right. Or
maybe a copyright is required (in that case, please tell me whether it
should be copyrighted to the kst development team or the individual who
contributed the code) ?
I am sorry about this, I will fix it as soon as I know what is wrong.

Nicolas