C'mon, Bill.
If the intention was to give Libya some air freight capacity, they'd have been given things like a 747-400.
A C130 is a military transport, for transporting military things which have the express purpose of rendering people into little bits.
I'd say a C130 full of tanks is exactly as much of a weapon as the tanks themselves.
Any transfer of military hardware is "arming" someone. I might give a pass to a transfer of medical and food supplies, but anything else - that's arming someone.