(svn r9315) -Merge: The newhouses branch. With this merge comes almost complete support for

the newhouses grf specs, so all newhouses grfs will be playable in the game.

Many thanks to everyone who contributed code and ideas, and all the testers
who found things we missed.

src/newgrf_spritegroup.cpp

@@ -8,6 +8,7 @@
 #include "newgrf_callbacks.h"
 #include "newgrf_spritegroup.h"
 #include "date.h"
+#include "sprite.h"
 
 static void SpriteGroupPoolCleanBlock(uint start_item, uint end_item);
 
@@ -33,6 +34,11 @@ static void DestroySpriteGroup(SpriteGroup *group)
 			free((SpriteGroup**)group->g.random.groups);
 			break;
 
+		case SGT_TILELAYOUT:
+			free((void*)group->g.layout.dts->seq);
+			free(group->g.layout.dts);
+			break;
+
 		default:
 			break;
 	}