CODE: remove return type qualifiers

git-svn-id: svn://tron.homeunix.org/simutrans/simutrans/trunk@6394 8aca7d54-2c30-db11-9de9-000461428c89
CODE: throw away now dead code

git-svn-id: svn://tron.homeunix.org/simutrans/simutrans/trunk@6395 8aca7d54-2c30-db11-9de9-000461428c89
FIX crash when building tunnel to close to map edge

git-svn-id: svn://tron.homeunix.org/simutrans/simutrans/trunk@6396 8aca7d54-2c30-db11-9de9-000461428c89
sqapi: export list of all good types

git-svn-id: svn://tron.homeunix.org/simutrans/simutrans/trunk@6397 8aca7d54-2c30-db11-9de9-000461428c89
CODE: clean interface to create/fetch squirrel classes

git-svn-id: svn://tron.homeunix.org/simutrans/simutrans/trunk@6398 8aca7d54-2c30-db11-9de9-000461428c89
FIX: crash when script sets city name to NULL

git-svn-id: svn://tron.homeunix.org/simutrans/simutrans/trunk@6399 8aca7d54-2c30-db11-9de9-000461428c89
CODE: make two functions return bool - return type is used as bool anyway

git-svn-id: svn://tron.homeunix.org/simutrans/simutrans/trunk@6400 8aca7d54-2c30-db11-9de9-000461428c89
sqapi: added some query functions to tile_x class

git-svn-id: svn://tron.homeunix.org/simutrans/simutrans/trunk@6401 8aca7d54-2c30-db11-9de9-000461428c89