1. It's no need to modify LTE-RRC's ASN.1 file for enabling option group
   feature in generate_asn1.
2. It's no need to patch the C header files generated from
   LTE-RRC/S1AP/X2AP's ASN.1 in fix_asn1.
3. It's no need to pre-process S1AP/X2AP's ASN.1 for enabling information
   object class feature by asn1tostruct.py.

This commit requires an un-official version of asn1c which are
collaboration of asn1c community members and `build_helper` is modified
in this commit accordingly :

  https://github.com/brchiu/asn1c/tree/velichkov_s1ap_plus_option_group

This asn1c can also convert ASN.1 of 5G NR RRC (38.331, v15.1.0) and
generate C files with -findirect-choice command line option without
tweaking ASN.1 file.

Examples for how to use this asn1c for S1AP are in S1AP files, e.g.
s1ap_eNB_nas_procedures.c and s1ap_eNB_handler.c.

There is an modified openair-cn (based on tag 0.5.0) with this new asn1c at :

  https://github.com/brchiu/openair-cn/tree/new-asn1c

Basic S1AP interaction and data transfer operation between OAI eNB and
this modified openair-cn has been tested.

Note: Community version of asn1c is keeping evolved to provide better usage.

fix: avoid assertion when terminating lte-softmodem process.

See merge request oai/openairinterface5g!341

Remove compilation warnings, also fix telnet server compilation failure and…

See merge request oai/openairinterface5g!340

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

Remove wrong prototypes rlc pdcp

See merge request oai/openairinterface5g!338

T tracer configuration identical for all executables, no ref to T Tracer config variables (T_port, T_wait...) outside the T tracer

Remove compilation warnings, also fix telnet server compilation failure and NB-IoT shared lib compilation failure introduced when reviewing L1 sources  organization

remove precomputed turbo codec interleaver table, remove useless F1 and F2…

See merge request oai/openairinterface5g!335

Merge branch 'automatic_turbo_interleaver_table' of https://gitlab.eurecom.fr/oai/openairinterface5g into automatic_turbo_interleaver_table

remove precomputed turbo codec interleaver table, remove useless F1 and F2 parameters to turbo codec (also remove global var dependancy between libraries)

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

Resolve "Code cleanup - LOG_M to replace write_output"

See merge request oai/openairinterface5g!336

# Conflicts:
#   openair1/PHY/LTE_UE_TRANSPORT/srs_modulation.c

Resolve "Minor modifications to CRC code"

See merge request oai/openairinterface5g!319

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

 -- adding sudo apt-get update for all variants
Signed-off-by: Raphael Defosseux <raphael.defosseux@eurecom.fr>

Resolve "Code cleanup - removal of "#if 0""

See merge request oai/openairinterface5g!329

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

CI: stability improvement

See merge request oai/openairinterface5g!337

  -- Stability issues when installing packages for USRP variants on new VM
     It sometimes timed-out
     Added loop up to 5 tries to add apt-repository
  -- Temporary merge during MergeRequest processing now returns an
     error when there are any conflicts
     Will stop the whole build
  -- Physical simulator now has a XLST for the XML result
Signed-off-by: Raphael Defosseux <raphael.defosseux@eurecom.fr>

  -- calling twice phy-sim test
Signed-off-by: Raphael Defosseux <raphael.defosseux@eurecom.fr>

Merge branch 'develop' of https://gitlab.eurecom.fr/oai/openairinterface5g into 322-code-cleanup-log_m-to-replace-write_output

  -- Corrected the long option version for variant in test run script
  -- added proper test in zip command in pipeline
Signed-off-by: Raphael Defosseux <raphael.defosseux@eurecom.fr>

Merge branch 'develop' of https://gitlab.eurecom.fr/oai/openairinterface5g into 322-code-cleanup-log_m-to-replace-write_output

CI: running physical simulator tests

See merge request oai/openairinterface5g!334

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

  -- on physical simulators
  -- no proper report yet
Signed-off-by: Raphael Defosseux <raphael.defosseux@eurecom.fr>