(svn r8014) -Codechange (r7573): When a tile is cleared, empty the general purpose bits in
extra as well, unless they are (or could be) used for bridges. This means these
bits don't have to be cleared seperately when non-bridgeable tiles are removed.
/* $Id$ */
KNOWN BUGS / PROBLEMS:
bridges:
- Clearing tiles which may not have a bridge above can cause random bridge pieces to appear, which leads to crash in the long run
electrified rails:
Normal and elrail depots look the same. Use 'X' (transparent buildings)
to distinguish between them
Missing curors / icons for construction (currently using the conventional ones)