SDL Video Driver

I'm currently working on an SDL Video driver, but I don't want to commit anything that breaks the SVN version yet, so no commits for a little while. I'm still busy though. :) Once I finish it up, I'll do a new _pre release so the SDL plugins will get more testing.

Also, I may have a PPC64 machine on the way, I'll post here if a PPC64 port is coming!