Import and rebase zoning patch

Fix some of the whitespace issues

http://www.tt-forums.net/viewtopic.php?p=888801#p888801

src/gfxinit.cpp

@@ -193,6 +193,8 @@ static void LoadSpriteTables()
 		);
 	}
 
+	LoadGrfFile("innerhighlight.grf", SPR_INNER_HIGHLIGHT_BASE, i++);
+
 	/* Initialize the unicode to sprite mapping table */
 	InitializeUnicodeGlyphMap();