Move model rendering back to 16bit vertex indexes, will fix later if …

…someone comes up with a reason for a model with >65535 verticies in Stepmania.

src/RageDisplay_D3D.cpp

@@ -857,7 +857,7 @@ class RageCompiledGeometrySWD3D : public RageCompiledGeometry
 			meshInfo.iVertexCount,		// NumVertices
 			meshInfo.iTriangleCount,	// PrimitiveCount,
 			&m_vTriangles[0]+meshInfo.iTriangleStart,// pIndexData,
-			D3DFMT_INDEX32,				// IndexDataFormat,
+			D3DFMT_INDEX16,				// IndexDataFormat,
 			&m_vVertex[0],				// pVertexStreamZeroData,
 			sizeof(m_vVertex[0])		// VertexStreamZeroStride
 		);