[OSM-dev] tiles at home - new version, blank sea tiles

[OJW]

Some initial modifications have been made to tiles at home to reduce the impact 
of all-sea tiles on disk usage, while still allowing coastal areas to be 
viewed correctly

* blanksea.png in the tiles at home client has been changed (by Dutch) to a valid 
PNG of exactly 69 bytes long.  
* to encourage people to install this change, the version name has been 
changed. Uploads from old versions have been disabled, so if you can't 
upload, check you have the latest version of tiles at home client.
* tiles at home server detects uploads of 67 (blank white land) and 69 (blank 
blue sea) byte tiles, and puts them in a special database.
* this database can then be used as a 404-handler for areas where regular map 
images aren't available.

More details about the coastline changes (along with some more things that 
need to occur before its complete):

http://wiki.openstreetmap.org/index.php/Tiles%40home/Dev/Coastline

and about the client upgrade:

http://wiki.openstreetmap.org/index.php/Tiles%40home/Messages

There's also a wiki page for server status messages now:

http://wiki.openstreetmap.org/index.php/Tiles%40home/Server


Regards

OJW