(svn r12650) -Feature: ability to force a vehicle to not load at a station.
-Feature: ability to force a vehicle to not unload at a station.

(svn r12197) -Fix [FS#1788](r12134): show correct last year profit when the train had negative income
-Codechange: use GetDisplayProfitThisYear() to convert vehicle profit to readable form

(svn r12134) -Change: count the number of ticks a vehicle was running this day to calculate running cost
-Fix [FS#1739]: vehicle profit is now counted with 8bit fract, so it is now shown properly in the vehicle details window

(svn r11802) -Fix [FS#716]: do not crash trains when leaving depot to a very long track
-Codechange: use dedicated pathfinder for signal updating, resulting in better performance and possible future improvements

(svn r11533) -Codechange: Rename some unclear clear_x prices member names.
While at it, remove one unused entry on the clear_price_table array.
It is based on ground type, and the unused one was referencing a non existing one.

(svn r11523) -Codechange: Move the CHANCE macros to core/random_func.cpp cause they depend on Random()
-Codechange: Convert the CHANCE macros to functions and rename them fitting to the naming style

(svn r11479) -Codechange: Move the BIGMUL functions to the file of their usage
-Codechange: Rename the BIGMUL functions to the fitting naming style

(svn r11374) -Codechange: Give meaning to the magical number that specifies the color of the text in a DrawString call.
Patch heavily based on BiBB's work (FS#1383)

(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 r10541) -Fix [FS#1028]: cargo payment rates overflow.
-Fix: cargo payment rates diverge from cost rates making it impossible to make any profit after a certain number of years.
Both are solved by stopping the inflation after 170 years; there is absolutely no point in continueing the inflation after that as it only makes the game have overflows at some point that cannot be solved; using larger variables only delays the inevitable.

(svn r10323) -Codechange: reference company name, number and player (president) name
by index

(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.