Speedup split_sources [skip hazardlib]
Speedup split_sources [skip hazardlib]


Former-commit-id: e4a70e7eef746e0086fca51593c917b860e3dc16 [formerly e4a70e7eef746e0086fca51593c917b860e3dc16 [formerly 62f311e9e9e473f23ff2cad9e49c8f908514d42b]]
Former-commit-id: e6e26d5fac0a93ec2a1b3c97c35f5065cd4aac66
Former-commit-id: 35a849e084fa57a3752ae4a61aee19ba81a4cc43
gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine