FIX: endless waiting before long block signals direct in front of stations

git-svn-id: svn://tron.homeunix.org/simutrans/simutrans/trunk@6574 8aca7d54-2c30-db11-9de9-000461428c89
FIX: initialize offsets with dummy values for COLOUR_DEPTH==0

git-svn-id: svn://tron.homeunix.org/simutrans/simutrans/trunk@6562 8aca7d54-2c30-db11-9de9-000461428c89
FIX crash in image_reader with COLOUR_DEPTH == 0

git-svn-id: svn://tron.homeunix.org/simutrans/simutrans/trunk@6563 8aca7d54-2c30-db11-9de9-000461428c89
FIX: use delete_node to delete stale besch's

git-svn-id: svn://tron.homeunix.org/simutrans/simutrans/trunk@6564 8aca7d54-2c30-db11-9de9-000461428c89
FIX: crash building powerline bridge up cliff

git-svn-id: svn://tron.homeunix.org/simutrans/simutrans/trunk@6547 8aca7d54-2c30-db11-9de9-000461428c89
FIX: no crash on brioken tunnels

git-svn-id: svn://tron.homeunix.org/simutrans/simutrans/trunk@6556 8aca7d54-2c30-db11-9de9-000461428c89
Debug code for freelist

git-svn-id: svn://tron.homeunix.org/simutrans/simutrans/trunk@6557 8aca7d54-2c30-db11-9de9-000461428c89

Conflicts:
	dataobj/freelist.cc
	simconst.h
FIX crash on with 64bit pointers

git-svn-id: svn://tron.homeunix.org/simutrans/simutrans/trunk@6558 8aca7d54-2c30-db11-9de9-000461428c89
Default freelist debugging off again

git-svn-id: svn://tron.homeunix.org/simutrans/simutrans/trunk@6569 8aca7d54-2c30-db11-9de9-000461428c89
Fix problem of disappearing freight correctly.