(svn r106) New network core (by sign_de)

Features:
* network core is dynamicly loaded when needed (-n isn't needed anymore)
for easy switching between single and multiplayer. But commandline
shortcuts are still enabled:
-n = autodetect network server
-n [ip] = connect to the server
* udp now uses 2 different ports
- you can run 1 server and serveral clients on one pc
- the clients udp-socket gets unloaded when the
network game starts
- the servers udp-sockets remains online to allow the
network gui to detect itself
* new gameinfo structure
this struct is available for every online/lan game
* dynamic NetworkGameList

(svn r85) -Add: initial commit of new AI (enable in Patch menu)
-Add: generalised A* Algorithm
-Add: generalised queues (Fifo, Stack, InsSort, BinaryHeap)

(svn r82) -Fix ttd.rc issues on non VS compilers
-Fix: network.c more robust (check for NULL pointer), if gethostbyname failes, try resolving IP address

(svn r80) New internal news system (implemented with fifo queue)
Message history works now

(svn r77) -Fix: [1010788] AI service interval bug (tnx truesatan)
-Add: AI overrides service interval to 180 days
-Fix: AI hanged when all vehicles were disabled in Patch menu

(svn r75) -Add proper crediting to graphics artists to about box.
-Change DEBUG lvl for GRF warnings/errors to 2, lvl 1 is used for copyright notices
-Fix show currect filename when debugging grf files

(svn r71) -Cheat: [976127] no extra frequent jet crash on small airports (truesatan)
-Changed some debug messages in aircraft code to DEBUG(misc, 1)

(svn r70) -Fix: typo in english.txt
-Add some debug messages for misc=1

(svn r69) -Feature: align toolbar left/center/right patch (TrueLight)
-Feature: added callback feature to patches options

(svn r68) -Fix: [1009621] build in pause is now a cheat instead of a patch (truesatan)
-Fix: Placing/editing signs signs is possible in paused mode

(svn r67) -Forget to change debug message for grfspecial.c
-Added compile flag NO_DEBUG_MESSAGES which will strip executeable of all DEBUG(..,..)'s

(svn r66) -Fix Station list updated on station deletion/station rename
-Changed debug messages to comply with DEBUG(name, level) heuristics

(svn r62) - Added "None" as option for number of industries in difficulty settings
- Updated French translation (by testman57)

(svn r60) -Fix: signal_density is given as a parameter to autosignal. This means all players can define it for themselves.
-Fix a few warnings

(svn r53) -Updated Czech language file (hadezz)
-Updated Galician language file (condex)

(svn r47) -Fix StartupEconomy warning in settings_gui.c
-More British language fixes (orudge)
-Added original vehicle names file. Select it from the list. Vehicles will have real name, all other strings are in English (orudge).

(svn r46) -Make proper difference between English/American language files. English (UK) is default language file (orudge)
-Add various languages to VS6 project file (orudge)

(svn r33) -Executeable is now openttd(.exe) always
-Resourcefile has been updated to 0.3.3.0

(svn r30) -Fix [1007272] Copy orders between bus/truck possible. You cannot share orders between busses/trucks. You can only copy orders if all the facilities in schedule allow both types to go there (Celestar)
-Fix Dutch in dropdown language box is not in BIGFONT

(svn r29) -Fix You cannot take ownership of an oilrig by building right next to it
-Fix when adding parts to a statin max size is not 15x15 anymore, but _patches.station_spread

(svn r27) -Fix: [1006715] Autorenew issues
-Add: PE_CURRENCY to patchmenu

(svn r22) Add: Competitors menu under patches
Fix: I forgot to delete a local var from ai.c