OpenGL2: Store normals/tangents as int16_t[4].

code/renderergl2/tr_curve.c

@@ -207,7 +207,11 @@ static	int	neighbors[8][2] = {
 			//if ( count == 0 ) {
 			//	printf("bad normal\n");
 			//}
-			VectorNormalize2( sum, dv->normal );
+			{
+				vec3_t fNormal;
+				VectorNormalize2(sum, fNormal);
+				R_VaoPackNormal(dv->normal, fNormal);
+			}
 		}
 	}
 }