log.c simplification, fix usefull functionality which never worked, move all log code from openair2 to common

This commit fixes issues introduced by the previous commit.

Summary of work:
- cleanup:
  - fix LOG_XX to be less verbose
  - fix cmake_targets/CMakeLists.txt
  - fix oaienv
  - remove dead code
- bug fixes:
  - in openair1/SCHED/fapi_l1.c we had:
      eNB->pdcch_vars[subframe&1].num_dci           = number_dci;
    should be:
      eNB->pdcch_vars[subframe&1].num_dci           = 0;
    This bug let the PHY send more DCIs than what should have been
    sent because num_dci is incremented later on in the code.
    This fix may be a problem for fapi mode, to be checked.
  - add new T VCD traces
  - revert openair1/PHY/TOOLS/file_output.c to 'develop' version
  - remove thread_id in logRecord/logRecord_mt
  - revert (and adapt) configuration files
  - be careful when doing frame++, we need to % 1024
  - revert target_rx_power in openair2/LAYER2/MAC/eNB_scheduler_ulsch.c
- NFAPI:
  - the open-nFAPI code has been included in the repository. See nfapi/README.
    Maybe we should "git clone" the Cisco repository instead. We have to be
    careful of availability though.

What has been tested:
- monolithic eNB FDD 5/10MHz with one UE, iperf UDP/TCP uplink/downlink

Anything else may fail to work, especially the FAPI mode, which has not
been tested at all.

not finished, UE may not work, many things bad/to fix properly

- ENB_PHY_OUTPUT_SIGNAL to trace output signal
- ENB_MAC_SCHEDULING_REQUEST to trace scheduling requests

we want those traces in the logs people send to us and
the group HEAVY is disabled in the wiki instructions.

looks better

- add mcs to ENB_PHY_DLSCH_UE_DCI
- add mcs, round, first_rb, nb_rb, TBS to ENB_PHY_ULSCH_UE_DCI

add ndi to trace ENB_MAC_UE_DL_SDU

- Msg3 allocation
- initiation of Random Access procedure

The VCD traces have changed. This commit gets in synch
with current status.

to be refined, it's rough

- update T_messages.txt
- update call sites of the T for thoses traces

- adding T macros here and there
- modify the T_messages.txt
- modify enb.c to trace them in the RRC view

plus add rrc connection setup complete tracing