Only use dateline fix when polygon crosses dateline.

- es1.x attempts to split polygons on the dateline along
  with holes, and then re-assign the holes to the new
  polygons.  In certain circumstances this assignment
  fails (https://github.com/elasticsearch/elasticsearch/issues/5773)
  The geojson format makes it clear which hole belongs to which
  polygon, and these issues can be avoided for polygons which
  do not span the dateline.
- there are additional issues with splitting polygons on the
  dateline.  Some shapes are lost in certain circumstances (bug
  yet to be filed).
  Sample shape: https://gist.github.com/anonymous/7f1bb6d7e9cd72f5977c