(svn r3659) Add function to get the road bits of a level crossing

(svn r3658) Add functions and symbolic names to retrieve road tile types and road pieces

(svn r3657) Fix indentation and remove now unused variable, which i forgot in r3655

(svn r3656) Simplify the overly complicated check for road pieces under a bridge

(svn r3655) Simplify a boolean expression and turn 3 if-cascades into switches

(svn r3654) Turn another if-cascade into a switch

(svn r3653) -Fix: You didn't pay for terraforming at the end tile when building a tunnel

(svn r3652) Rewrite CmdBuildTunnel in the hope to make it a bit more comprehensible
This implementation is also significantly shorter because it removes many redundant checks

(svn r3651) -Fix: r3646 fixed some lame compiler, but broke others... this fixes it for some more compilers

(svn r3650) Fix braino in r3649, spotted by Mihamix

(svn r3649) Turn several if-cascades into switch()es

(svn r3648) - Fix typo in r3647, don't ask me how it got there s/_/./

(svn r3647) Some style-changes to the parameter parser

(svn r3646) - We are not using MFC so don't use afxres but winres. This solves the compilation problem if MFC is not installed with the compiler IDE (VS6 for example)

(svn r3645) Fix stupid typos in last (r3644) commit *sigh*

(svn r3644) Don't use FindLandscapeHeightByTile() when it's overkill - often it was just a complicated way of writing GetTileSlope(tile, NULL)

(svn r3643) Remove a local variable which is just a pointer to a road stop status field and had the sensible name 'b'; instead directly use the road stop status field

(svn r3642) There is a 'npf' debug level for a reason, use that instead of bastardizing 'misc'. Also, pointers are checked against NULL in an if-statement

(svn r3641) - Rename MusicFilesettings 'btn_down' to more sensible 'playing'

(svn r3640) - Remove win32-only variables from variables.h and put them into win32_v.c. Also ifdef the win32 specific configuration file settings.

(svn r3639) Silence warnings on gcc about {} initializers around unions

(svn r3631) - 2cc: Remove use of some temporary variables and perform minor optimization in the form of the ternary operator.

(svn r3628) - Add BOOL and STRING types to saveload capabilities. String is unused up till now and it saves the full-buffer, regardless of how many characters the string actually has. So give a warning for that and figure it out later.

(svn r3627) - Change all hardcoded 255 max-saveload versions with the define SL_MAX_VERSION

(svn r3626) - Merge the SlGlobVarList (global variables) and SaveLoad (offset in struct, variable determined runtime) structs. The only difference between these two is the last element that either holds the address or the offset in the struct. Which one to take is determined by which function is called; SlObject or SlGlobList.

(svn r3625) - Move sl_version inside the functions where they are used to force usage.

(svn r3624) - CodeChange: Some cosmetic changes in the saveload code;
- hide and validate variable-size calculation (SlCalcConvMemLen/SlCalcConvFileLen)
- some signed/unsigned fixes
- handle conditional variables the same way for global -and struct types, through checking version_from and version_to

(svn r3623) - Standardize DEBUG() messages in saveload.c

(svn r3622) - Partly revert r3214. The patch setting max_num_autosaves stays to help control PDA-troubles which the commit was intended for. Didn't revert makefile-config version since it would cause trouble. But Bjarni promised to rewrite it :)

(svn r3621) - Codechange: Only define the server and bans list if network is enabled. Preparatory work for saving patches/settings to savegame.