[Routing] Gosmore routing server

[Lambertus]

Hi Nic, *

First, complements for your work on Gosmore. It is amazingly fast.

After reading your post I decided to give a routing website a try. My 
first working result is: <http://tile.openstreetmap.nl/~lambertus/routing>.

It uses a dataset of the Netherlands with a small part of Germany and 
Belgium (240 MB .pak file). Just click the 'From' button, click on the 
map to place a marker and repeat for the 'To' button. The route will be 
plotted with a blue line if Gosmore finds one. If there's no reaction in 
a reasonable amount of time you can assume that no rout was found. Click 
'clear' to start a new route.

A few questions popped up while trying some routes:
- Can Gosmore be used as a cgi-bin namefinder? If so, how?
- Relatively often Gosmore is not able to find a route while looking at 
the OSM data does not reveal any obvious problems. It would be 
interesting in such circumstances to be able to somehow 'debug' this. 
Maybe return a list of edge nodes as discussed in another routing thread 
this month?
- In one instance Gosmore ran for more than 30 minutes to calculate a 
route (which is an exception) so it would be nice for the routing server 
to be able to set some sort of maximum run time for Gosmore.