(svn r16242) -Codechange: rework pausing
-Fix [FS#2864]: autopause and manual pausing conflict with eachother
-Fix: new game + pause on new game + autopause make the game not unpause on the first join

(svn r16228) -Fix/Change (r16187): If we are heading for a different depot, do also not do the refitting-part of the depot-order.
-Fix (r16198): && != &, GetDepotOrderType != GetDepotActionType and - uhm - ODATFB_NEAREST_DEPOT is not set for current_order either.

(svn r16079) -Fix [FS#2824]: insanely fast trains would not stop in time for stations
-Fix: insanely fast trains would sometimes 'jump' over waypoints/via stations within a tick, which would cause the order not to be processed causing the train to go in loops until (with luck) it 'hit' the tile

(svn r15541) -Revert (r15399): 'v->cargo_type' is also used in other places, which cannot accept CT_INVALID.
-Codechange: Add Engine::GetDefaultCargoType() and Engine::CanCarryCargo() and use them.
-Fix [FS#2617]: When articulated parts have no available default cargo, use the cargo type of the first part for livery selection.
-Change: To decide whether a vehicle is refittable do not test its current capacity for being zero, but always use the 'capacity property'.
Note: The property is used unmodifed without calling CB 15/36. By setting it to a non-zero value and returning zero in the callback vehicles can be refitted to/from zero capacity for e.g. livery effects.
Note: It is intentional that you cannot control refittability by CB 36.

(svn r15077) -Codechange: enumify DAYS_IN_YEAR and DAYS_IN_LEAP_YEAR
-Change: when computing daily running cost, divide by 365 (instead of 364). Since r12134, the rounding errors don't need this correction anymore

(svn r15027) -Merge: tomatos and bananas left to be, here is NoAI for all to see.
NoAI is an API (a framework) to build your own AIs in. See:
http://wiki.openttd.org/wiki/index.php/AI:Main_Page
With many thanks to:
- glx and Rubidium for their syncing, feedback and hard work
- Yexo for his feedback, patches, and AIs which tested the system very deep
- Morloth for his feedback and patches
- TJIP for hosting a challenge which kept NoAI on track
- All AI authors for testing our AI API, and all other people who helped in one way or another
-Remove: all old AIs and their cheats/hacks

(svn r14958) -Codechange [FS#1923]: when checking for unique names, compare only with manually set names
There are situations that aren't solvable (because of different language files), so if the user really wants to have duplicated name, allow him to do so. It solves desyncs between server and clients using different languages. It behaves the same in SP and MP, so users won't see the different behaviour as a bug (and even checking in SP could be worked around by the user).

(svn r14395) -Fix [FS#2285]: crashes and GUI desyncs when order is deleted/modified while the timetable window is open
-Fix: close any dropdown and child windows in the Order and Timetable windows when selected order is deselected, deleted, ...

(svn r14369) -Fix: Enforce non-front engines to be stopped.
This could be caused by old savegames resp. their conversion, and causes
trouble for e.g. autoreplace.

(svn r14258) -Codechange: rework the way to query the vehicle hash to make sure it always results in the same irregardless of the order of the hash-linked-list.
-Fix: desync in PBS reservation following, vehicle flooding and road vehicle overtake/follow code.

(svn r13681) -Revert (r13678, r13677): the fixes didn't work in all cases (assertions on savegame loads).
-Fix [FS#2102]: but now in a hopefully beter way.