added initialize_pr_data() to classical calculator
added initialize_pr_data() to classical calculator


Former-commit-id: c6fd8d987f3b9b1f7527302a57326f82b6fe8d8c [formerly ba311e7ef7fc719061974cf07c92c0eb1fb4332a] [formerly ba311e7ef7fc719061974cf07c92c0eb1fb4332a [formerly a530173d125dd4986cf21a6228e0c7f0ddf2e5af]]
Former-commit-id: e31bfb1098b2d03c5af8afe001d5552a3e16e334
Former-commit-id: c04c372efb9295b07ee835f025f0b64d0ca4c835
gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine