cleaned up BB linking logic
cleaned up BB linking logic


curtiszimmerman/libcpu,monocasa/libcpu,glguida/libcpu,libcpu/libcpu,ukatemi/libcpu,ukatemi/libcpu,ukatemi/libcpu,curtiszimmerman/libcpu,monocasa/libcpu,libcpu/libcpu,monocasa/libcpu,curtiszimmerman/libcpu,glguida/libcpu,libcpu/libcpu,libcpu/libcpu,curtiszimmerman/libcpu,glguida/libcpu,monocasa/libcpu,ukatemi/libcpu,glguida/libcpu