(svn r16324) [0.7] -Backport from trunk:

- Fix: Desyncs due to the fact that depot searching with a maximum search depth simply does not work with YAPF's caches [FS#2900] (r16323)
- Fix: Trains could get stuck in a depot when they wanted to go to the same depot again [FS#2873] (r16322)
- Fix: In the scenario editor change the (starting) game year of the scenario, not the (starting) game year for new games/scenarios (r16321)
- Fix: Loading of savegames created in revision between 0.3.5 and 0.3.6 caused crash (r16320)
- Fix: [NoAI] Set the autorenew settings for new AI companies to the default values, not to 0 or the local settings (r16316)
- Fix: [NewGRF] Allow accessing the house age when the house is not yet built (r16314)
- Fix: (Get|Set)TrackBits() is only valid for RAIL_TILE_NORMAL and _SIGNALS (r16311)

src/road.cpp

@@ -18,7 +18,7 @@
 bool IsPossibleCrossing(const TileIndex tile, Axis ax)
 {
 	return (IsTileType(tile, MP_RAILWAY) &&
-		!HasSignals(tile) &&
+		GetRailTileType(tile) == RAIL_TILE_NORMAL &&
 		GetTrackBits(tile) == (ax == AXIS_X ? TRACK_BIT_Y : TRACK_BIT_X) &&
 		GetFoundationSlope(tile, NULL) == SLOPE_FLAT);
 }