WMS - Scalehint should be provided when MIN/MAXSCALE is set

[dmorissette]

Paul Ramsey wrote:
> 
> I have started exploring the WMS capability somewhat... I was wondering
> why the WMS does not provide a ScaleHint for layers which have
> explicitly defined min and max scales? 

Probably just an omission... I'll try to check that.

> What will the MapServer WMS do if
> a client does  GetMap on a layer using an extent which violates the
> maxscale? 

The layer just won't show up.

> I am thinking in terms of writing a client which knows nothing
> about the WMS except there is a service there: in order to properly
> request scale-restricted layers, the ScaleHint is vital. Otherwise the
> client could request every contour in the province, when in fact
> contours should only be requested at a close-in zoom level.

[dmorissette]

ScaleHint has been added in capabilites output.