Well, first of all, you have to rename them. Then you could do the

use "\c:...directory of script";

I think, I'm not sure. Or, i think it was like, for example, MJPolyTools:

MJPolyTools setup;

or simply

MJPolyTools

That way you could just first type

GOOMOO;

and

TinyTools;

Yeah... I'm not sure, its different with every MEL script.