Merge branch 'ru_rau_enhancement-external-timing' of https://gitlab.eurecom.fr/oai/openairinterface5g into ru_rau_enhancement-external-timing

Merge branch 'ru_rau_enhancement-external-timing' of https://gitlab.eurecom.fr/oai/openairinterface5g into ru_rau_enhancement-external-timing

Merge branch 'ru_rau_enhancement-external-timing' of http://gitlab.eurecom.fr/oai/openairinterface5g into ru_rau_enhancement-external-timing

Merge branch 'ru_rau_enhancement-external-timing' of http://gitlab.eurecom.fr/oai/openairinterface5g into ru_rau_enhancement-external-timing

    added more statistics on iperf server report analysis
Signed-off-by: Raphael Defosseux <raphael.defosseux@eurecom.fr>

    fix main.py help message
Signed-off-by: Raphael Defosseux <raphael.defosseux@eurecom.fr>

Signed-off-by: Raphael Defosseux <raphael.defosseux@eurecom.fr>

 -- no more -x option at compilation time
 -- iperf server report crash better handled
   -- python executor retrieve iperf server files in case of failure to analyze
   -- comparison w/ requested bandwidth
Signed-off-by: Raphael Defosseux <raphael.defosseux@eurecom.fr>

Summary of changes:
- fix compilation on CentOS
- some work on the T tracer:
  - add a 'multi' tracer to connect several tracers at the same time
  - improve 'to_vcd' to be compatible with previous VCD traces
- preliminary work for X2 handover
- various bug fixes

A new version of asn1c is to be used with this commit.
Do:
  cd [top directory of repository]
  source oaienv
  cd cmake_targets
  ./build_oai -I

Conflicts:
	common/utils/T/T_messages.txt

As reported by Konstantinos Alexandris and Robert Schmidt.

As reported by Robert Schmidt.

Merge remote-tracking branch 'origin/fix_missing_s1ap_15.2.0_asn_module_and_update_asn1c_commit' into develop_integration_2018_w33

- 'busy' has to be handled in a more atomic fashion to avoid crazy
  runtime race conditions
- the basic simulator is too fast sometimes; rewrite the accesses to
  the T cache to avoid there again crazy behaviors

Hopefully that's better...

This commit removes the warning:
make[4]: warning: jobserver unavailable: using -j1.  Add '+' to parent make rule.

Basically, inside a Makefile we should use $(MAKE) instead of make.

Since VCD has now to go through the T tracer, we enforce the consistency
of data found in common/utils/LOG/vcd_signal_dumper.[ch] with data
found in common/utils/T/T_messages.txt.

We might get completely rid of common/utils/LOG/vcd_signal_dumper.[ch] at some
point. For the moment, let's keep it.

This commit adds the program common/utils/T/check_vcd.c and necessary
modifications to enforce its use at compilation time.

If you modify common/utils/LOG/vcd_signal_dumper.[ch] but do not update
common/utils/T/T_messages.txt an error will pop up when you compile the
software. You have to keep both modules synchronized.

Merge remote-tracking branch 'origin/340-fix-beamforming-for-multiple-antenna' into ru_rau_enhancement-external-timing

Conflicts:
	openair1/SCHED/ru_procedures.c