Changed how the request envelope is determined in BilMapResponse to
correctly handle WMS 1.3.0 GetMap requests. (New method modeled after
GeoTiffMapResponse.) Added unit test for WMS 1.3 requests. This change
fixes issue GEOS-6662.
Merge branch 'master' into fix_bil_bbox

Conflicts:
	src/community/dds/src/test/java/org/geoserver/wms/worldwind/BilTest.java
Merge pull request #782 from parkerabercrombie/fix_bil_bbox

[GEOS-6662] Fix "Intersection is null" error from BIL plugin