revise one class string to omit use of '+'
revise one class string to omit use of '+'

git-svn-id: https://beagle.whoi.edu/svn/ifcb/trunk@1149 9f5e5bc8-6430-4f94-ad00-aad15e9f9366

Former-commit-id: 9b0119ce5aecb0fe0502f41bca0a29853a2ad76e
hsosik/ifcb-analysis,hsosik/ifcb-analysis,hsosik/ifcb-analysis,hsosik/ifcb-analysis,hsosik/ifcb-analysis