build.sh: make_boot_image can just use -run=bootstrap.image.
build.sh: make_boot_image can just use -run=bootstrap.image.

bpollack/factor,bpollack/factor,factor/factor,bpollack/factor,factor/factor,factor/factor,mrjbq7/factor,mrjbq7/factor,tgunr/factor,factor/factor,factor/factor,tgunr/factor,bpollack/factor,bpollack/factor,mrjbq7/factor,mrjbq7/factor,tgunr/factor,bpollack/factor,factor/factor,bpollack/factor,tgunr/factor,tgunr/factor,mrjbq7/factor,tgunr/factor,mrjbq7/factor