Fixed bugs in PointFeatureCopyFactory and StationFeatureCopyFactory.
* Added test to SortingStationPointFeatureCacheTest.
Merge branch 'SortingPointFeatureCache' of https://github.com/cwardgar/thredds into SortingPointFeatureCache

Conflicts:
	cdm/src/test/java/ucar/nc2/ft/point/SortingStationPointFeatureCacheTest.java