This tracer allows the connection of several tracers to one tracee.

To use the multi tracer:
- run the tracee as usual, eg. ./lte-softmodem -O xxxx.conf --T_stdout 0
- run the multi tracer: ./multi -d ../T_messages.txt
- connect other tracers to the multi tracer:
   - ./enb -d ../T_messages.txt -p 2022
   - ./textlog -d ../T_messages.txt -p 2022
   - etc.

By default the multi tracer connects to the tracee to the port 2021,
as for any other tracer.

Then it accepts connections from other tracers on the port 2022.

This can be changed with parameters on the command line.

The tracee and the other tracers can be stopped/started at any time.

- bug fixed in ue and enb tracer: the socket needs to be closed
  in case of restart
- cleanup: fix spacing in T_messages.txt

Summary of changes:
- bug fixes in various places

A better solution has to be found.

Pass the command line arguemnt -vcd to trace all VCD variables
and functions.

 -- balanced (current version): all UE shares the same BW
 -- single-ue : one UE will use the whole requested BW
 -- unbalanced : all but one UE will use a residual 2% of the requested BW
                 the rest of requested BW will be used by one UE
Signed-off-by: Raphael Defosseux <raphael.defosseux@eurecom.fr>

One of the optimized RE allocation function does not work properly
and generates some decoding errors with a COTS UE. Let's use the
generic function for the moment, while analyzing what is wrong.

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

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

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

Merge remote-tracking branch 'origin/338-correcting-changes-made-in-dlsch_demodulation-c-in-8cbe7cf6' into develop_integration_2018_w31

Conflicts:
	openair1/PHY/LTE_UE_TRANSPORT/dlsch_demodulation.c

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

Merge remote-tracking branch 'origin/337-fix-t_ids-h-issue-for-phy_mex' into develop_integration_2018_w31

Conflicts:
	cmake_targets/CMakeLists.txt

Merge remote-tracking branch 'origin/issue332-dft-initializations' into develop_integration_2018_w31

Merge remote-tracking branch 'origin/334-iq-replay-without-mmap-usage' into develop_integration_2018_w31

 * adding merge request allow flag:
  -- if false no forced merge to develop
  -- if true and if branch is not develop, then forced merge to develop
 * lowered the ru gains in CI conf files
 * adding on-the-fly HTML summary within python main.py script
 * adding 20 MHz testcases to FDD band 7 scenario
 * adding GitLab status for
  -- centOS build
  -- FDD-band7 tests
Signed-off-by: Raphael Defosseux <raphael.defosseux@eurecom.fr>

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

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

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

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

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

 -- if false no forced merge to develop
 -- if true and if branch is not develop, then forced merge to develop
Signed-off-by: Raphael Defosseux <raphael.defosseux@eurecom.fr>

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

  -- Adding script to notify developer when introducing compilation warnings
  -- Fix on the CentOS log archiving / reporting
Signed-off-by: Raphael Defosseux <raphael.defosseux@eurecom.fr>

- install package 'vim-common' to have 'xxd' needed by the compilation
  process of the T tracer
- change the way xxd is called so that no file is created in case
  of error

  Adding a build stage on CentOS (only one variant : -w USRP --eNB)
  Should not trigger a fail for the moment
Signed-off-by: Raphael Defosseux <raphael.defosseux@eurecom.fr>

  -- log collection on enb log requires a sudo when removing log files
  -- added iperf log collection to jenkins file
  -- corrected iperf detection of packet loss ( added jitter also)
  -- increased iperf DL requested BW for 10 MHz
Signed-off-by: Raphael Defosseux <raphael.defosseux@eurecom.fr>

more flexible to support 4x4 system.

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

  -- stdbuf -o0 seems to be causing segmentation fault
  -- using daemon instead of nohup
  -- also repeating several time "got sync" message and flushing stdout/stderr
Signed-off-by: Raphael Defosseux <raphael.defosseux@eurecom.fr>

otherwise T_IDs.h was not generated.
2.Adding extra files to the PHY_MEX library.