Update expansion_order specification for tests #14,#15,#16,#17,#18 to utilize dimension_preference for anisotropy.  Resolves new DIFFs.  Note that the updated dakota_diff.perl script did a nice job of managing the difference in expansion  lengths.
Update expansion_order specification for tests #14,#15,#16,#17,#18 to utilize
dimension_preference for anisotropy.  Resolves new DIFFs.  Note that the updated
dakota_diff.perl script did a nice job of managing the difference in expansion 
lengths.


git-svn-id: c6750f7dd89925e309f580f56430152d063ff36c@1838 aa0779c3-6ec2-4b84-a212-a405c134cd8d

pemryan/DAKOTA,pemryan/DAKOTA,pemryan/DAKOTA,pemryan/DAKOTA,pemryan/DAKOTA,pemryan/DAKOTA,pemryan/DAKOTA