(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 r2387) - CodeChange: made the saveload code more readable and also removed the 'byte' saveload arrays which means you can save an array of more than 255 elements, or bigger structs than 255 bytes. This doesn't yet solve the problem that a chunk can be a maximum of 16384 big.
- Fix: also fix an unnoticed error in SlSaveLoadConv() due to wrong types.

(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would crash if you full-screened with the 'fullscreen' button than chose a resolution from the dropdown box that was no longer valid.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 r1523) -Fix: somehow mousewheel was disabled on windows using SDL; reenabled again
-Fix: added missing CDECL to ellipsis functions and changed VS6 project file to use _cdecl calling conventions (thx tamlin)

(svn r1281) -Fix: the OS/2 is now finished. Fixes:
- Networking
- File selector issue
- Keyboard input
- Dedicated server console issue (use dedicated.cmd to open a server)
- Plus many other minor issues

(svn r1268) -Fix: some warnings in gfx.c fixed
-Fix: Makefile now correctly works for cygwin/mingw; altough defining only cygwin does not compile the game
-Fix: moved SDL information message from severity 0 to 1. Only errors/severe warnings should be level 0

(svn r1076) Feature: Patch setting to autosave the game on exit
If you set autosave_on_exit = true in openttd.cfg, your game will be saved as exit.sav in the autosave folder and you won't be asked if you want to quit the game any more.

(svn r621) Merge r450 to trunk:
Cleanups and #if 0 some unused debug code

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

(svn r312) -Fix: [926105] ctrl + d bug. Longest outstanding bug has been fixed \o/ 2004-03-30 (Tron)
-Fix: [1030393] some screensizes crashes OTTD. Fix in general bug that only allows resolutions which were multiple of 8 in width and height. Also use closest possible resolution in fullscreen if window size is not a valid resolution (Tron)

(svn r223) -Fix: Const correctness and miscellaneous fixes. Thank you Tron for your diligent fixing of warnings (and some possibly bugs) (Tron)
-CodeLayout: Remove trailing spaces and Windows linebreaks