(svn r14735) -Codechange: remove a bit of bit-waste in the map array (without changing the map array) and make the CompanyIDs contiguous.
-Note: 15 should be enough for now... making it any more means adding more bytes to the map array and thus wasting more bits instead of reducing the bit waste.

(svn r14680) -Feature(ette) [FS#2434]: Use property 4 (model life) also for wagons.
Setting property 4 to 0xFF will protect the vehicle (engine or wagon) from expireing. (Necessary since early introduction dates)
Savegames will only be affected after 'resetengines'.

(svn r13256) -Codechange: merge the OPTS and PATS chuncks.
-Codechange: split the diff_custom variable.
-Feature: allow changing some of the diff_custom variables via the console in network games.

(svn r11822) -Codechange: Replaced fixed size custom name array. Names are now attached to their object directly and there is
no limit to the amount of names.
-Fix: NewGRF engines could not be renamed.

(svn r9034) -Codechange: renamed _pause to _pause_game, as some targets already have
a symbol called _pause (and therefor our variable conflicts with
thatone. We shouldn't be using _ as global indicator.....)