Bug fix 1326

When changing subsurf level, in shaded mode, and with Mesh that has more
users... the shaded displist of the other meshes are corrupt, potentially
causing crash.

And: small improvement in select-outline: when drawtype-extra Wire is set,
it skips it. Not needed, looked a bit ugly.

source/blender/src/drawobject.c

@@ -3366,6 +3366,8 @@ static void draw_solid_select(Object *ob)
 {
 	Curve *cu;
 
+	if(ob->dtx & OB_DRAWWIRE) return;
+
 	switch(ob->type) {
 	case OB_MESH:
 		drawSolidSelect(ob, NULL);