modify BUILD_ID to 3.4 beta0
modify BUILD_ID to 3.4 beta0

cocos2d-x/fbx-conv,super626/fbx-conv,super626/fbx-conv,lvlonggame/fbx-conv,lvlonggame/fbx-conv,lvlonggame/fbx-conv,super626/fbx-conv,cocos2d-x/fbx-conv,cocos2d-x/fbx-conv