add unit test specifically for rectangles around polygons crossing IDL
add unit test specifically for rectangles around polygons crossing IDL

hodbauer/cesium,YonatanKra/cesium,progsung/cesium,CesiumGS/cesium,CesiumGS/cesium,geoscan/cesium,likangning93/cesium,hodbauer/cesium,kaktus40/cesium,geoscan/cesium,likangning93/cesium,kaktus40/cesium,progsung/cesium,likangning93/cesium,CesiumGS/cesium,CesiumGS/cesium,jasonbeverage/cesium,likangning93/cesium,josh-bernstein/cesium,YonatanKra/cesium,YonatanKra/cesium,likangning93/cesium,YonatanKra/cesium,AnalyticalGraphicsInc/cesium,AnalyticalGraphicsInc/cesium,CesiumGS/cesium,hodbauer/cesium,jasonbeverage/cesium,josh-bernstein/cesium