Add a comment about sys.path[0]
Add a comment about sys.path[0]


Former-commit-id: 3a20f7bdaafdec5f6ed4e333604fe401633f63f8 [formerly 9e9bc72afb54f6d7a7d9f23e2203a2f01a92db49]
Former-commit-id: 64f7331a9d3eadddeb0d3771a9e78525e6f6ab4c
gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine