Clearwire isn't the only American company building a carrier-independent (if you can call majority ownership by Sprint "carrier-independent") 4G network, you see -- and it would certainly behoove T-Mobile to investigate options that let it stay on a more GSM-aligned path for its next-gen network than WiMAX would, right? That might be where Harbinger Capital Partners comes into play, a group that recently bought up a bunch of satellite and terrestrial spectrum with the intention of creating a wholesale LTE network into which companies -- companies like T-Mobile, for instance -- coul