(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 r3421) - Revert r3412 as it didn't work.
- Fix station builder issue by checking the tile is in bounds.

(svn r3403) -Codechange: [multiheaded engines] the references between the front and rear engines are no longer saved
instead the pointers are generated on load

(svn r3396) - Autoreplace changes:
- Change fixed array per player to a single pool. This avoids future problems
with vehicle numbers and decreases savegame size. Engine replacements from
previous savegames will be lost.
- Move engine replacement code from players.c to engine.c.
(thanks to blathijs for rewriting this)

(svn r3380) -Fix: removed 'size' from r3379, because it was pretty silly
-Note: no longer showhelp publish -p, as it is deprecated

(svn r3379) -Fix: protect showhelp against any possible overflow
-Add: [ FS#15 ] Added revision / version at top of help (./openttd -h)

(svn r3376) -Codechange: made enums for GenerateWorld and InitializeGame 'mode'
-Fix: [ FS#30 ] don't reset date in SE when pressing RandomLand (rewrote patch of MeusH, but Peter warned me I should put his name in, so... oh well)

(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 r3356) - Remove unused parameter of AfterLoadGame().
- Initialize _sl_version after loading an old savegame.

(svn r3313) Remove GPMI related changes from trunk
Revisions in detail: 2542, 3226 (partial), 3229, 3231, 3232, 3238, 3242-3245, 3251, 3253, 3260, 3263, 3265, 3266, 3269, 3277, 3278, 3279, 3283 (partial), 3304, 3305, 3306

(svn r3294) - Fix: use INVALID_STRING_ID instead of -1.
- Fix: savegames only give back one message, show this by ignoring the first argument. Perhaps make the message more verbose in the future by adding STR_ equivalents next to the already existing debug messages.

(svn r3226) -Fix: GPMI implementation had minor glitches
-Fix: the AI speed control is done by the AI-core, individual AIs don't have to do it (so, AIs were delayed twice ;)
-Add: Support for AI-network-clients (an AI, connecting to a remote server)
-Fix: minor AI-core problems

(svn r3214) -Feature: openttd.cfg can now set how many autosaves to keep before starting to overwrite old ones
max_autosave_num in the config files sets the number of autosaves to keep (default 16)
MAX_NUM_AUTOSAVES in Makefile.config sets the default value. 16 is used if no value is given
this behaviour can still be overwritten by keep_all_autosave (openttd.config setting)
Note: this is a requested behaviour for PDA ports, since they got limited storage space

(svn r3212) - Waypoints/Depots: Store waypoint index in m2 for waypoints. This moves the ground type bits from m2 to m4 for waypoints and depots (leaving room for depot index in m2 in future), and moves the custom graphics ID to the waypoint struct.
- Waypoints: Until now stat_id was saved but never assigned to. Instead we now save the GRFID/local index of the custom graphics so that GRF file changes can leave graphics intact.

(svn r3181) -Bracing
-Indentation
-Whitespace
-DeMorgan's Law
-Test with NULL or 0 for non-booleans
-'\0' instead of 0 for chars
-Remove redundantly redundant comments (like DoFoo(); // Do foo)
-Join multiple short lines with a single statement
-Split single lines with multiple statements
-Avoid assignments in if

(svn r3173) Use the trinary operator and switch to improve readability
Also align short cases nicely

(svn r3155) -Feature: [autoreplace] autoreplace can now remove cars from too long trains
-Trains will now remember the length of stations it visits and sell cars
when being autoreplaced if they became too long
-If it needs to remove cars, then it starts from the front and sells
all it can find until the train is short enough
-This only works for trains, that knows the station length of the route
so a full uninterrupted run is needed
-a train needs 1-2 runs to detect if the shortest station is expanded
-This feature can be turned on and off in the train replace window
and each company can have it's own setting
-NOTE: minor savegame version bump

(svn r3077) static, const, bracing, indentation, 0 -> '\0'/NULL, typos in comments, excess empty lines, minor other changes
nothing spectacular, just some stuff, which piled up

(svn r2921) -Codechange: moved all AI-code to 1 central place (ai/ai.c)
-Fix: removed the ability for the oldAI to cheat (this will criple him somewhat)
-Add: base-code for many improvements to come in the AI-system
-Add: added base-code for multiplayer AIs (DOES NOT WORK YET!)

(svn r2909) Game would hang where the autosave_on_exit was activated.
- Updated VS.NET and VS6 project files changed AI files

(svn r2866) Move all functions and tables which aren't directly involved in managing the sprite heap to a new file gfxinit.c.
This doesn't ease the global variable mess, but makes the distinction between sprite heap and gfx loading routines easier.

(svn r2817) -Codechange: [autoreplace]: moved autoreplace and autorenew to serverside
-This means that one company can only have one setting for renew and replacing
more clients will not fight due to different settings anymore
-This is a needed step in the line to fix autoreplacing dualheaded locomotives
NOTE: savegame revision bump (peter1138 + me in coop)

(svn r2685) -Codechange: Split the music/sound/video drivers into separate files and move them into subfolders.
This results in shorter and hopefully easier to maintain files.
Note: I had to change paths in #include statements of some unrelated files, because I added the ottd base directory to the include path (-I.)

(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 r2610) - Feature: set server map name to the loaded name of the game/scenario. Also truncate where neccessary
- Feature: truncate the path of the saveload window

(svn r2606) -Codechange: renamed ai.c to ai_old.c, and ai.h to ai_new.h to make room
for a global AI-handler

(svn r2602) -Codechange: removed unused variable (disable_computer)
-Fix: Changed some stuff to make server-side AIs possible in the far future

(svn r2583) Move OS specific code out of misc.c
Added support for Mersenne Twister random number generator (not implemented in network yet)
Wrap player randoms around #ifdef

(svn r2564) Fix: Fixed conceptual issue in network_gui.c. AllocateName is not meant to be used by GUI-code, because it modifies the "game-state".
Added a way to bind a C-string to an openttd string which doesn't modify the game state.

(svn r2560) Fix: various minor code changes.
Added RandomTile/RandomTileSeed functions to generate a random tile.
Changed landscape routines so they don't assume that the Y map side is a power of two. (support for this is not complete, though)
Changed some frequently used map macros to not compute the values each time.
Silence some warnings on MSVC.

(svn r2542) -Add: [GPMI] Added GPMI (http://sourceforge.net/projects/libgpmi/)
support to OpenTTD in preperation of AIScripts (long term). It is OFF
by default. Add GPMI:=1 to Makefile.config to enable.