(svn r2358) Add macros for getting (GB) and setting (SB) a range of bits
Use them exemplarily to prettify (Get|Set)Tile(Type|Height)

(svn r2338) - CodeChange: only call the variable hooks when you set their value not when you query them
- Fix: typo in pool.c "Cleaing up" --> "Cleaning up"

(svn r2332) - Feature: Add 'clear' command and CTRL+L to empty the console window
- Fix: do not execute emtpy commands anymore

(svn r2310) - Fix: Game would crash if you full-screened with the 'fullscreen' button than chose a resolution from the dropdown box that was no longer valid. Big thanks to DaleStan for track down the crashing bug.
- Fix: There would be duplicate entries in the resolutions dropdown box. Copy SDL method or removing duplicates and sort the list.
- Feature: in the settings menu, you don't have to click on the arrows anymore, clicking on the dropdown box itself has the same effect. Consistent with other dropdowns in the game

(svn r2308) - Fix: enforce server-only and/or offline commands by giving them flags in the process table. This also fixes bug "[ 1190944 ] Many commands not checked for security"
- CodeChange: move ValParamRailtype() to check rail type from command.h to vehicle.h where it is better suited.

(svn r2307) - Fix (regression): it was not possible to change the drive-side in the intro-game.
- CodeChange: remove unused "CANT_DO_THIS" double-string.

(svn r2303) - CodeChange (fix): when giving money to other players only allow transferring money that is above your loan. Eg you can't give away your loan.
- Langfix: 'goes down by' 'increases', vv for down in english.txt.

(svn r2301) - CodeChange: prettyify ChangeOwnerShipOfPlayerItems() a bit
- CodeChange: add comments to a very ugly part of the code (network_client.c); that enforces that the server gives an ID to the client.

(svn r2300) - CodeChange: check the last number of commands, now only the refit ones remain, and some server-only commands.
- CodeChange: remove cmd-misuses CmdStartScenario() and CmdDestroyCompanyHQ()
- Fix (invisible): when parameter checking CmdRestoreOrderIndex() the vehicle did not have its orders yet, so it would fail. So move doing this until AFTER the orders have been added back in RestoreVehicleOrders()

(svn r2299) - Fix: add more verbose output to possible hack-attempt.
- Btw, only 14 more commands are remaining, 88% done \o/

(svn r2298) - CodeChange: removed CmdAbuses: CmdSetTownNameType(), CmdStartNewGame(), CmdCreateScenario(), CmdSetNewLandscapeType() and CmdGenRandomNewGame().
- CodeChange: renamed CmdTrainGotoDepot() to CmdSendTrainToDepot() to be consistent with other depot commands.
- CodeChange: 'newgame' console command now calls the unabused GenRandomNewGame(). For the server it still creates a new game, a client quits the game and continues in SP.
- CodeChange: in the game-difficulty window, setup the disabled buttons on window creation, not every redraw.

(svn r2297) - CodeChange: server-check the next batch of commands.
- CodeChange: since only the server will be able to modify difficulty settings, leave the checking of correct values besides, and trust users will join legit servers.
- CodeChange: for renaming signs, only check if GetDParam(); eg _decode_parameters is empty ('\0') or not, instead of the extra check of players, etc. That basically does the same thing. Also dirty sign two times when renaming, once before, once after the action. Because if the name becomes shorter and you update only after, garbage remains on the screen.
- CodeChange: made GetMaskOfTownActions() available to the town-cmd to double-check if the action was available to the player. For this purpose the hardcoded _local_player has been removed from the function and is now passed as a parameter.

(svn r2290) - CodeChange: protect the next batch of commands. This brings us to a total of 61, which is 53% :)
- CodeChange: To correctly accept engine-prototypes, the best-player checking has been moved to its own function, I hope it functions the same as before.
- CodeChange: Added symbolic types of PlayerID, OrderID and EngineID. For engines also added GetEngine() and IsEngineIndex(), similar to the other such functions.
- CodeChange: To correctly build industries, some tables have been moved to build_industry.h. The only way to find out currently if an industry is valid in a climate is by looping all industries and checking if it matches. Also to comply with the patch setting build_rawmaterial_industries, it is assumed that these industries do not accept any cargo of any type. This can and probably should changed in the future to some flag in their struct. Also use _opt_ptr instead of _opt.
- CodeChange: implemented the HQ checking code inspired by MarkR2 in "[ 1190944 ] Many commands not checked for security". Unfortunately it is impossible to prevent only deleting a HQ by a modified client atm.
- CodeChange: For insert order and modify order their parameters are implicitely truncated to 8 bits, instead of the 16 bits said in the comments.

(svn r2288) - CodeChange: protected the next batch of commands (41 so far, out of 115).
- CodeChange: changed the airport gui airport-type checking. Added function GetValidAirports() that returns bitmasked availibility, is also used for checking.
- CodeChange: to check tree-planting, 2 const arrays have been moved to table/tree_land.h (type and count)
- CodeChange: added IsTownIndex() in following of IsStationIndex(), etc.
- Fix (regression): road tunnels did not work anymore, forgot that their type was 0x200 (documented now)

(svn r2286) - CodeChange: paramcheck the next batch of commands.
- Fix (regression): fix up terraform land where every player can terraform land (towns, map generation), and player can terraform different corners; used for building tunnels

(svn r2285) - Codechange: Fix up some of the missing things from server-checking; namely bridge-type, bridge-length, dragged end-tile (bridge/station), station_spread
- Fix: [ 1197256 ] max station spread patch < 7 does not work. Station spread was not taking into account when not using drag&drop. Fix this up, and add a callback to the settings window to immediately reflect the changes.

(svn r2281) - Fix: [ 1115204 ] [NPF] When pressing the goto depot button, trains will now also look behind it if there is no depot in front. If so, the train reverses immediately. This also work anywhere, not just at stations.
- Add: [NPF] Reversing inside of depots now has a penalty. It also applies to trains only, other vehicles shouldn't bother reversing.
- Fix: [NPF] When checking whether to reverse a train, the trackdir of the first loc was used instead of the last vehicle as a starting node for pathfindig.
This might have caused some trains not reversing when they should have (or vice versa). Typo introduced when converting to GetVehicleTrackdir() in r2256.
- CodeChange: [NPF] Removed duplicate code by letting NPFRouteTjoStationOrTile() call NPFRouteToStationOrTileTwoWay().
- Add: [NPF] NPFRouteToDepotBreadthFirstTwoWay() to find a depot while also looking backwards.
- Add: It is now possibly to specify a path cost for aystar starting nodes.

(svn r2262) - Fix: Assertion when vehicle in a depot wants to do pathfinding.
GetVehicleTrackdir now tries to get a valid trackdir as much as possibly, by assuming that a vehicle is facing outwards in a depot or road station, for example.
- Codechange: [Multistop] Multistop now also tries to find a slot for road vehicles that are in stations, since the pathfinder now properly handles that.

(svn r2261) - Fix: When crashed vehicles try to find a depot for servicing, openttd asserts.
Crashed vehicles shouldn't find depots anyway...