(svn r10770) -Codechange: use the pool item class as super class for the vehicle struct.
-Codechange: do not force "special" vehicles to be allocated in the low 1024 vehicle slots and non "special" vehicles in the rest of the slots.

(svn r10258) -Codechange: as we are now using int64 all over the place, it's better to use int64 variables in the string generating too instead of packing them into two int32s.
-Fix: some displays of money were wrong.

(svn r10097) -Feature: Add support for articulated road vehicles, or callbacks 11 and 17 for
road vehicles for those who prefer the technical explanation.

(svn r10026) -Fix: unlinking a rail vehicle didn't clear the first pointer
After r9973, this could cause some asserts as some vehicles could end up with first pointers to chains they didn't belong to

(svn r10023) -Fix (r3218): When selling trains, if there were no wagons between multiheaded
engines the rear part could be checked despite having already been deleted,
triggering an assert.

(svn r9973) -Cleanup: removed some code that kept both ends of a dualheaded engine in the same train (when moving wagons in a depot)
NormaliseTrainConsist() is called later in the same command and it will take care of this issue

(svn r9967) -Fix (r9938): autoreplace would in certain conditions move dualheaded engines in a train (usually to the rear)
-Change: moving an engine in between the two ends of a dualheaded engine will now move the rear dualheaded engine to the front of the newly added engine (instead of moving the new engine to the rear of the rear dualheaded engine)
This can make a difference if there are wagons in the train

(svn r9543) -Fix [FS#691]: Split up STR_ENGINE_NOT_BUILDABLE into four strings so it can be
translated properly and remove "buildable", since it isn't actually a word.

(svn r8946) -Feature: [NewGRF] Add support for vehicle variables 0xFE and 0xFF bit 10,
which is set when a vehicle was built during the exclusive testing phase.

(svn r8900) -Fix

Get rid of DECLARE_ENUM_AS_BIT_INDEX(Track, TrackBits)

(svn r8899) -Fix

Remove the unused second parameter from GetTileRailType()

(svn r8897) -Fix

Change the signature of GetNewVehiclePos():
-void GetNewVehiclePos(const Vehicle *v, GetNewVehiclePosResult *gp);
+GetNewVehiclePosResult GetNewVehiclePos(const Vehicle *v);

(svn r8896) -Fix

Most (i.e. 13 of 15) callers of GetNewVehiclePos() do not care for the return and the others can figure it out by inspecting the information returned in struct GetNewVehiclePosResult.
Therefore remove the return value.

(svn r8894) -Fix

Slightly simplify the control flow of TrainController()

(svn r8893) -Fix

variable scope, const, misc.

(svn r8884) -Fix

Replace SetSpeedLimitOnBridge() by something simpler

(svn r8878) -Fix

-Fix: Do a better job when checking the parameters of CmdMoveRailVehicle()
NOTE: 0.5 candidate

(svn r8610) -Codechange/Feature: rewrote the list handling in the autoreplace window
-The user will notice the following changes:
All vehicle types behaves in the same way
Adding/removing an engine (new design and so on) can no longer result in the window selecting a new engine
All valid replacements will be displayed since it looks at refitting options as well (this solves the missing ships with the newships GRF)
Since you can't replace an engine into itself, the engine selected in the left list will no longer appear in the right list

-The code changes:
Instead of looping all engines all the time, each list generates a list like the build windows
This ensures consistent list generation since only one function can loop all engines
Unified code for all vehicle types
It now use the lists to call the drawing code in the build vehicle window
Works on selected EngineIDs instead of selected index in the list

(svn r8550) -Fix

Building a vehicle does not involve allocating orders, so do not check whether orders could be allocated

(svn r8455) -Codechange: Give a more meaningful name (railveh_type)to member flags of RailVehInfo, as well as changing the code to reflect the fact that it was not a flag but rather a one value only variable. Doing so, some evaluations have been simplified.
-Codechange: Add and use RAILVEH_SINGLEHEAD when railveh_type is set to 0, which was implicit before.
-Cleanup: Remove some extraneous parenthesis.