See merge request oai/openairinterface5g!595

The following Merge Requests are included:

* MR 544: RRC Inactivity Timer testing
* MR 581: Remove deprecated build options
* MR 583: RRC: add an option to enable measurement reports
* MR 590: bugfix UE realtime bug

  -- scenarios were using FDD 5MHz conf file w/ active RRC inactivity timeout
  -- since we are waiting very long that UE is sync'ed w/ eNB, timeout occurs and UE is released
  -- solution is to disable timeouts in command line in scenario
  -- also python is fixed to handle properly wrong ping exits
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/issue425_buildsimplification' into develop_integration_2019_w21

Merge remote-tracking branch 'origin/RRC-Inactivity-timers-testing' into develop_integration_2019_w21

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

When pushing traffic with iperf the UE was crashing.

The argument passed to pthread_mutex_timedlock is absolute time based
on the CLOCK_REALTIME timer, not relative time. That seems to be the
root cause of the bug. (That there is a timeout is another story.)

This commit uses absolute value.

Also we separate cases between IS_SOFTMODEM_BASICSIM / IS_SOFTMODEM_RFSIM
and standard realtime UE. In the 'sim' modes we don't care about
timeout and just call pthread_mutex_lock. It seems to be the idea
of the original work. If not, then to be fixed.

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

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

 # Please enter the commit message for your changes. Lines starting

More build_oai cleanup, add a generic option "--build-lib" to build optional shared libraries (telnet server for example)