(svn r3600) -Fix: suppress error on 64bit targets

(svn r3599) -Fix: added some casts to suppress some more warnings

(svn r3598) -Fix: suppress invalid warning by assigning value to variable

(svn r3597) Miscellaneous (I like that word) changes: Fix some indentation, add consts, reduce indentation level by short-circuit logic, convert if cascades to switch, whitespace, bracing, plus some minor stuff

(svn r3596) -Codechange: [OSX] changed to use Apple's macros instead of OTTD macros for endian conversion
This increases the execution speed a lot since GCC can't detect the OTTD macro as an endian conversion
while Apple's code uses the instruction to convert endian instead of a series of instructions to produce the same result

Since we don't have that many endian conversions in the game, overall performance should not increase noteworthy

(svn r3595) Several small cleanups, the only notable are some additional symbolic names for a few ISO8859 characters

(svn r3594) - NewGRF: Add support for some vehicle specific properties and a give a debug message for unknown variables.

(svn r3593) Fix typo in r3591

(svn r3592) Miscellaneous smaller changes, most notably replacing sizeof(type) by sizeof(*variable)

(svn r3591) - Fix: validate the setting of max_companies/spectators through the console.

(svn r3590) Fix a bug where sizeof(struct) was allocated instead of sizeof(pointer to struct). This was non-fatal, because more memory than necessary got allocated

(svn r3589) - Rename u.road.unk2 to u.road.blocked_ctr

(svn r3588) - Refit: Use only one global to return the refit capacity rather than one per vehicle type.

(svn r3587) - NewGRF: Rename Callback IDs to include their "class"

(svn r3586) - NewGRF: Load callback masks for all vehicle types.

(svn r3585) Similar changes to the order handlers of the other vehicle types like r3584

(svn r3584) Replace the rather obscure control flow for handling road vehicle orders by something remotly comprehensible

(svn r3583) Fix 2 glitches in r3556

(svn r3582) Restructure MoveGoodsToStation() to avoid double bookkeeping of StationIDs and station pointers

(svn r3581) Just noticed the indentation was totally off, fix it

(svn r3580) Some small cleanups before the real change, especially reduce the indentation by one by using continue

(svn r3579) v->u.rail.first_engine holds an engine type, not a vehicle index, so use INVALID_ENGINE.

(svn r3576) - Allow unused wagons have their ->first set. This fixes the faulty cache warning message, and noticably speeds up depot operations in large games.

(svn r3574) - [Merge] [GPMI] -Fix: finally OTTD doesn't compile if you do a 'make mrproper' (TrueLight)

(svn r3573) - Replace assert(0) with NOT_REACHED(). This commit sponsored by "giving Darkvater credit for the last three".

(svn r3572) - Rewrite GetFreeUnitNumber() so that only one loop of vehicles is required. Instead a list of used/unused numbers is created and the first unused number is chosen. This significantly improves performance in large games.

(svn r3571) - When loading a game, call TrainConsistChanged() for each train head separately before updating images, as v->first is used extensively in GetTrainImage() for custom graphics. This gives a significant speed improvement on loading a game.

(svn r3570) - Explicitly update v->first in TrainConsistChanged() if necessary, as this is far faster than brute forcing it later.

(svn r3568) - Fix: constantizing side-effect of qsort in r3563. Ugly? Yes. Makes MSVC happy? Yes.

(svn r3567) -Fix: for once and for all, use 'unsigned long' if you want to cast something
from int-like to void *... we fixed that not too long ago, and the code below
this changed line clearly tells you do to that :p