added warning for extremely absurd region files

overviewer_core/tileset.py

@@ -587,7 +587,6 @@ class TileSet(object):
         self.xradius = xradius
         self.yradius = yradius
 
-
     def _rearrange_tiles(self):
         """If the target size of the tree is not the same as the existing size
         on disk, do some re-arranging

overviewer_core/world.py

@@ -484,6 +484,8 @@ class RegionSet(object):
             p = f.split(".")
             x = int(p[1])
             y = int(p[2])
+            if x > 10000 or y > 10000:
+                logging.warning("Holy shit what is up with region file %s !?" % f)
             yield (x, y, path)
 
 class RegionSetWrapper(object):