Use utf-8 encoding to open source model - avoid charset 0x81 problem on windows
Use utf-8 encoding to open source model - avoid charset 0x81 problem on windows


Former-commit-id: b7e66da425376cc1058f31947a8e3aac2794e104
gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine