[Tagging] Golf tag combinations

[Warin]

Yet more golf... sigh.


Many of the golf tags (golf=green, tee, fairway) are combined with 
landuse=grass.

And other golf tags (water_hazard as an example) use the key natural.

To may way of thinking these should use the surface tag e.g. 
surface=grass, that clearly shows that the surface is secondary to the 
golf feature.

While using the landuse/natural tags may get the 'golf tag' rendered,

using it that way surely is 'tagging for the render' as it is not the 
golf tag that is rendered.