add rotation fix which is at least correct for my HTC Desire
add rotation fix which is at least correct for my HTC Desire

ldo/3D-Compass,bojjaanil/3D-Compass,bestwpw/3D-Compass,bojjaanil/3D-Compass,ldo/3D-Compass,ldo/3D-Compass,bestwpw/3D-Compass,bojjaanil/3D-Compass,bestwpw/3D-Compass