To remove the 10% dev fee on b8 version just edit the binary using vi editor :
vi xptminer-sse4-b8
:,$s/RUhMA8bvsr48aC3WVj3aGf5p1zytPSz59o/Your_Address/
(ENTER)
:wq
@miki, did you really want to start an arms race? I have no desire to make it hard for people who really object to the dev fee to remove it, so I left it simple as you noticed - with help - but you should consider the long-term effects of your actions with respect to the incentives for miners and developers and creating a thriving community for the coin.