add initial pybullet module, using the shared memory API

(for now, start the example browser in 'physics server',
then compile using premake --python option,
then run python in the bin folder (so it finds pybullet.so)
and run the test.py script in examples/pybullet folder.
The robotics shared memory C API is very suitable for this.

examples/TinyRenderer/main.cpp

@@ -82,8 +82,11 @@ int main(int argc, char* argv[])
   
     int textureWidth = gWidth;
     int textureHeight = gHeight;
-    
-	TinyRenderObjectData renderData(textureWidth, textureHeight);//, "african_head/african_head.obj");//floor.obj");
+   TGAImage rgbColorBuffer(gWidth,gHeight,TGAImage::RGB);
+        b3AlignedObjectArray<float> depthBuffer;
+	depthBuffer.resize(gWidth*gHeight);
+ 
+	TinyRenderObjectData renderData(textureWidth, textureHeight,rgbColorBuffer,depthBuffer);//, "african_head/african_head.obj");//floor.obj");
 	
 	//renderData.loadModel("african_head/african_head.obj");
 	//renderData.loadModel("floor.obj");