* require Geo::Distance, not Geo::Distance::XS

  The problem with "require Geo::Distance::XS" is: the import()
  function is never called, but this function actually does the
  overwrite of the distance() method. So the "used once" warning was a
  real problem, and shouldn't be ceased at all.

  It's better to just say "require Geo::Distance" --- if the ::XS is
  available, then it's anyway automatically loaded, and it's done
  right.
bbbike mapnik tile server update
bbbike map compare URL update
* data update
add API_DIR
allow to configure BBBIKE_WEB_SERVER
the cache is maybe empty
improve api.bbbike.org statistics
up to 4 devel/production machines
check watermark
redirect cyclerouteplanner.com and bbbike.org/mc
bandwidth limit per host
access restriction for devel site
new virtual host mc.bbbike.org

access restriction for devel site moved to .htaccess
Merge branch 'world' of ssh://git.bbbike.org/home/git/bbbike into world
enable .htpasswd
documentation
cleanup apache config
fix clean-cache race condition
ignore out-commented lines