Please bring back "Disable Lightning" option

[cluthz]

Fixing the bug would be awesome, and I think people have asked about this since forever.
However, it's still there, and the disable lightning is somewhat a "fix".

On a side note, I'm pretty inexperienced with git, how to just revert one single commit?
Also any quick way to find you which revision that corresponds to which commit?

Btw this is the commit i guess:
http://code.google.com/p/dolphin-emu/source/detail?r=1dd6b978c1dafccbc8b7db9efb5c15d75596d1c8