data update (u.a. updates in Lichterfelde)
data update (moved culdesac entries into new file culdesac-orig)
data update (fixed a culdesac error)

Found with a (not yet commited) new check for culdesac files.
fix in std_p_binding

Variable was missing in condition.
culdesac: introduction of a new data file

Make targets, checks ...
cgi: implemented culdesac handling on crossing page
cgi-test.t: test case for culdesac handling
cgi, refactoring: get rid of some $_

The nested loops in make_crossing_choose_html, all using $_, looked
somewhat scary to me...
data update (systematic culdesac check within S-Bahnring)