Restored fast rtree index construction
Restored fast rtree index construction


Former-commit-id: e0da0102117a62ec9ff3ccaa96c6e09db5e117ea [formerly 2339fec894caf429a30016aea3f4095c68c1bde7] [formerly 2339fec894caf429a30016aea3f4095c68c1bde7 [formerly 16550c475eb33884c938499afd09f88151ce682c]]
Former-commit-id: 6ae695bcd9f5efe34ce6e2a36b2556f05a3d76f4
Former-commit-id: 826f25483292106487b5fa3d5b781f408ceeedeb
gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine