Revised graphics for Bamiyan Buddha, it now has its own z-Buffer file!

Unfortunately building a new Wonder for BDZG yielded unwanted news through tests - After the Nordic Warror Hall, Nordic senate was demonstrated to be too large. I have since then fixed the issue by reducing the size of both the mesh and the TGA to 90%. I may reduce the size of the Ducal Hall for BDZG to an even smaller proportion.