Fixed storing list of unicode strings in HDF5
Fixed storing list of unicode strings in HDF5


Former-commit-id: 6371e835ffc12e57a86b8f062b589eb2c77610bf [formerly ba7568dbcab7d63899053e274c1b6be7705512df]
Former-commit-id: a10c325439f7f504a2fac95e719b3031376b2bd4
gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine