Merge remote-tracking branch 'origin/develop_integration_2018_w29' into develop

Summary of changes:
- RF simulator enhancements
- remove oaisim
- use new asn1c
- bug fixes / cleanup
  - TDD fixes
  - IQ replay fixes
  - clean VCD/LOG_XX

The new asn1c requires a reinstallation.
Do:
    ./build_oai -I