Build failures on 64bits machines

Hi again,

Continuing with my work on the Debian package...

Building Amaya on 64 bits machines with gcc 4.0 fails because of casts
from pointer to int. The attached patch fixed the problem on an AMD64
machine.

Regards,

Regis
-- 
"While a monkey can be a manager, it takes a human to be an engineer" Erik
Zapletal