SISSOKO Mamaduo's skin glistens in the glare of the afternoon sun in Tanahabang, Jakarta. He doesn't seem to care about the sweat covering his body, and this Mali native hurriedly enters a clothes store in Jalan K.S. Tubun Raya, Central Jakarta. In just a few moments, this 60-year-old trader ventures out again, cuts through the traders milling about him, and then hurries off. He does not look like he is hiding anything. "I can prove that I