Restored split_sources [skip hazardlib]
Restored split_sources [skip hazardlib]


Former-commit-id: 0f560121719514f81e8a4eb6db48ea043f5b931e [formerly 0f560121719514f81e8a4eb6db48ea043f5b931e [formerly fa30857fc0c0a76fa58afdce50f179d57ae4e276]]
Former-commit-id: 828d36071e26974a236415769aafdfc877ebc262
Former-commit-id: ec1ac6cc4951218e74eb1e9f2b27b9fd6f9bbc95
gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine