input/source:
input/source:

Added util function to convert characteristic source from nrml to hazlib.


Former-commit-id: 5696e7d7aaa00e2a0379e01eb3a5a849fa21ff72 [formerly e3efcf99beecdb7068713ec168b39299bd799ef7]
Former-commit-id: 23743c4a58b3c17f65dfead1bc2bd7e7c6845ecb
gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine