changing MT97Hawaii from class to subclass
changing MT97Hawaii from class to subclass


Former-commit-id: 4e5f4783222624065c35aba701ebd8a622d1d026 [formerly 7410827d34fd7711586e7589f9ce4524f4cc11ab]
Former-commit-id: 1d341fa34ee574b58e65a99070c36a50803503ca
gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine