[Tilesathome] Patch for mod_tile.c for transparent maplint fallback tiles

[spaetz]

On Mon, Oct 13, 2008 at 07:01:11PM +0200, Martin Hawlisch wrote:
> find attached a patch for mod_tile.c which will then check for the layer name and deliver a transparent tile instead of an oceantile fallback for the maplint an caption layer if no tileset file exists.
> Currently the maplint overlay is useless in many regions an in zoom < 12 because it return nontransparent fallback-tiles that completely cover the map tiles.
> 
> A C guru might want to validate it because my c coding dates back some years ;-)

In lack of a C guru, I had a look at the code and just ran it. Thanks, applied.

spaetz