(svn r7565) -Codechange: Rework DEBUG functionality. Look for appropiate debugging levels to
use in debug.h. grfmsg() is now used as a specific debug-function for grf.

(svn r6930) -Codechange: Move industry name into IndustrySpec
-Codechange: member color_map is more related to random color, rename it as such

(svn r6771) -Codechange: Replace two macros with functions. IS_HUMAN_PLAYER and
IS_INTERACTIVE_PLAYER

(svn r6381) -Cleanup: make the '/* */' comments that span multiple lines more uniform.
-Cleanup: whitespace alignment of a few tables.

(svn r6047) -Codechange: FOR_ALL now _only_ loops valid items, and skips invalid ones
-Codechange: use IsValidXXX where ever possible
Note: both changes to prepare for new pool system, which needs those changes.
For every pool there are 2 ugly lines, which will be removed when done
implementing new pool system.
Based on FS#13 by blathijs, partly implemented.

(svn r5999) -Feature: change the original date format to a 32 bits format based at the year 0.
The game date subsystem now allows someone to start in the year 0 and continue
up to the year 5 000 000. However, you currently cannot build anything before
1920 as there is no newgrf support for dates before 1920 or after 2090 yet.

(svn r5916) -Cleanup: use MIN_YEAR/MAX_YEAR for the year boundaries and BASE_YEAR when comparing _cur_year with a 'full' year.
-Cleanup: replace some magic '1920' values with BASE_YEAR.

(svn r5887) -Cleanup: move date related functions, defines and variables to date.[ch]
-Cleanup: fix whitespace related coding style issues in date.[ch]
-Cleanup: make original comments doxygen compatible and remove/change outdated comments

(svn r4466) -Fix: (FS#71) Game no longer crashes when the last vehicle serving a station has been deleted.
-Negative side effect: upon loading old games, stations whose last vehicle was a station have (temporarily) lower ratings.
-Positive side effect: station.h no longer includes vehicle.h (breaks the station.h->vehicle.h->rail.h chain)

(svn r4259) -[multistop] Fix/Feature/Codechange:
1) Improved the road vehicle allocation (aka slotting) for multistop. Stops can now accept unlimited, er... 256, vehicles.
2) Removed the "wait for stop" feature, because it did not work in practise.
3) Slotting now ignores unreachable stations. Uses NPF at the moment because the old pathfinder cannot do it (yet)
4) Now matter how many vehicles approach a station, they will always be distributed evenly over existing stops.
5) Hopefully the last fundamental change to multistop

(svn r4126) - Feature: A new multi-lingual multi-measuring-unit system:
- Replace miles/kilometres game option with a general measuring units option.
- Add {POWER}, {WEIGHT}, {WEIGHT_S} and {VOLUME_S} (_S for short) tags to the language/string system.
- Add SI as option for measuring units.
Language file updates to use the system will come soon.

(svn r3472) - [PBS] Remove from trunk. Anyone interested can still find it in branch/pbs. This reverts revisions r3158, r3140, r3075, r2977, r2674, r2625, r2621, r2529, r2528, r2525, r2524, r2519, r2517, r2516, r2507, r2499. (in conjunction with Tron)
- The only change is that the nsignalsw.grf file is kept and that existing nightlies with PBS signals get those signals converted to combo-signals.

(svn r3362) Fix issue with loading old (TTD) savegames:
- move call to convert from old to new train subtypes.
- ensure AI is started for AI players.

(svn r2657) -Codechange: The available railtypes per player are now a bitmask, so
that railtypes do not be in ascending order of appearance. Allows easier
implementation or more railtypes

(svn r2528) - Fix: TTDPatch games had garbage in _map3[hi]&0xF0 which interfered with OpenTTD PBS functionality; fixed in oldloader
- Fix: TTD AI internals are still a puzzle and the AI in state 'SellVehicle' doesn't have a valid vehicle, so change the state to something harmless. Both fixed make sure that Megarail TTD scenario works

(svn r1826) -Feature: a brand new OldLoader so OpenTTD is TTD(Patch) compatible
again.. kind of anyway. Still needs work for the extra chunks
TTDPatch provides, and which we use too, but not in the same way..
- Also, no longer BE is a problem, reading is BE/LE safe.
- Tnx to Bjarni for the BE testing, Tron for the help on the BE,
Darkvater for helping out, and Mek for providing me with the correct
information regarding TTDPatch savegames

(svn r1817) -Codechange: Moved depot-functions to depot.c
-Codechange: Added wrappers around depot-access (GetDepot no exists)
-Codechange: Made depot-functions a bit more logic (no longer
GetDepotByTile crashes your game when you request it on a non-depot tile)
-Add: made depots dynamic (yes, 64k depots are possible now)

(svn r1771) -Add: Industries are now dynamic (up to 64k industries). Generating
1kx1k maps should now be much faster, and give more than just oil-stuff ;)

(svn r1764) -Add: dynamic towns, you can now have up to 64k towns (let me know when
you have that amount of towns in a map ;))

(svn r1721) -Feature: It is now possible to build multiple road stations (up to 8) on
a single station.
Thanks to: Truelight for the saveload code, Darkvater and Hackykid for
network testing and Tron for proof-reading 1500 lines of diff.

(svn r1525) -Codechange: rewrote the _order_array, now it can be made dynamic.
-Codechange: renamed all 'schedule' stuff to 'order(list)'
-Codechange: moved all order-stuff to order_cmd.c / order.h
-Codechange: vehicles that share orders are now linked to eachother
with next_shared/prev_shared in Vehicle

Developers: please use AssignOrder to assign data to an order. If not,
you _WILL_ make the save-routine to assert!

(svn r1486) -Codechange: moved all 'signs' stuff to signs.c/h and prepared it for
dynamic arrays

(svn r1407) -Codechange: changed a lot around _stations, _vehicles, _towns and _industries
(in prepare of dynamic arrays):
- DEREF_XXX is changed into GetXXX
- All direct call are directed via GetXXX
- struct Industry has now an index-field
- ENUM'd some stuff
- Replaced home built loops with FOR_ALL_XXX
- Added _stations_size, _vehicles_size, ... which gives the length of the
array (which will be dynamic in the near future)
- Changed lengtof(XXX) to _XXX_size (e.g. _stations_size)
- Removed all endof(XXX) (because mostly it was part of a FOR_ALL_XXX)
- Made the sort-functions of all 4 dynamic
- Made all 4 Initialize functions more of the same
- Some minor tab-fixing and stuff
(tnx to Tron for proof-reading my 100kb patch ;))

Note for all: please do NOT directly call _stations, _vehicles, _towns and
_industries, but use the right wrapper to access them. Thank you.
Ps: please also do not use 'v++', where v is of type Vehicle *.

(svn r1288) -Codechange: changed _map2 to an uint16. It is still saved and loaded as
an uint8 till the savegame version is bumped to version 5. Then it works
automaticly as a fully uint16. So _stations[] can not be increased till
after the bump!!

(svn r990) Fix a display bug in the order list:
TTD stores invalid orders different than OTTD, this resulted in empty lines in the order list. With the overhaul of the order system this got worse: no line was shown at all.
Fix this by sanity checking while loading and convert the orders accordingly.

(svn r955) Replace uint16 for orders with struct Order
This adds no functionality, but is a stepping stone for future improvement (like 16bit order indices) and is easier to read.
This changes preserves binary compatibility wrt savegames.

(svn r815) Include strings.h only in the files which need it.
This should reduce the compile time after altering english.txt by about 1/3, because "only" 62 instead of 90 .c files must be recompiled.

(svn r645) -Feature: Finally support for TTDLX games on Big Endian machines such as Macintosh and MorphOS; thanks for testing Bjarni :)
-Added turkish.txt to lang-project and screenshot.h to ttd-project

(svn r607) -Patch: [ 985102 ] static cleanup
Thanks to lvoge

(svn r207) -Codechange: randomizer handling
-Fix: desync problem fixes
-Fix: server doesnt hang anymore when a client timed out
-Feature: low latency connection enhancements [*net_sync_freq, *net_ready_ahead]

(svn r5) -Fix: townname generation of TTDLX savegames. All work
except for German Townnames (also fix one typo on
English town-names)
-CodeChange: *act_paper to *act_water in Town to
more resemble its use
-Fix: AI players now retain AI status. Since TTDLX
savegame status is not fully documented, some holes
exist (AI state is set to one without a vehicle, otherwise
it crashes)