(svn r6775) -Codechange: Use some more proper types, especially Owner and PlayerID as

these are used intermixed often.

map.h

@@ -67,12 +67,13 @@ static inline TileIndex TileVirtXY(uint x, uint y)
 	return (y >> 4 << MapLogX()) + (x >> 4);
 }
 
-typedef enum Owner {
+typedef byte Owner;
+enum Owners {
 	OWNER_TOWN      = 0x0F, // a town owns the tile
 	OWNER_NONE      = 0x10, // nobody owns the tile
 	OWNER_WATER     = 0x11, // "water" owns the tile
 	OWNER_END       = 0x12,
-} Owner;
+};
 
 enum {
 	INVALID_TILE = (TileIndex)-1