-M2 register against MCE (Multicast Control Entity)
	-Basic M2AP control procedures developed (eNB<-M2AP->MCE)

	ACKNOWLEDGEMENT:
 	1. This commit was developed at Vicomtech (https://www.vicomtech.org) under UE project CDN-X-ALL: "CDN edge-cloud computing for efficient cache and reliable streaming aCROSS Aggregated unicast-multicast LinkS"
 	2. Project funded by Fed4FIRE+ OC5 (https://www.fed4fire.eu)
Signed-off-by: Javier Morgade <javier.morgade@ieee.org>

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

In the configuration file, to enable measurements, add:

    enable_measurement_reports = "yes";

Note that if x2 is enabled then the option 'enable_measurement_reports'
is not taken into account and the measurements are enabled.

* Instead of partly initializing in read_config_and_init(), everything of
  PDCP is initialized in main() of lte-softmodem
* Omit RC.rrc access in RRU through checking of RC.nb_inst > 0
* Includes FlexRAN, i.e. do not start FlexRAN in RRU
* Function pointers to PDCP functions have to be set explicitly (avoid
  confusion of multiply setting function pointers)

  -- rrc_inactivity_threshold in seconds
Adding support in CI to test it
  -- disable/enable data service on UEs
  -- no automatic check yet on the UE status
     certainly should be done w/ a Flexran controller command
Signed-off-by: Raphael Defosseux <raphael.defosseux@eurecom.fr>

This commit introduces X2AP timers (t_reloc_prep, tx2_reloc_overall).
You need to set the values in the configuration file.

X2AP can be enabled or disabled in the configuration file too (disabled
by default).

Some deadcode was removed.

parameters for PRACH/PUCCH in configuration file. Default values are those used for Band 7. eMTC configuration file for eMTC changed to reflect modification made for Band 13 operation.

- free correctly in rrc_eNB_free_mem_UE_context
- check for existence of ue_context.handover_info in rrc_enb_process_itti_msg
- check return value sctp_peeloff in sctp_handle_new_association_req_multi
  and exit in case of failure

Fix corrupted LOGs in L1L2simulator, introducing two new components NFAPI_VNF and NFAPI_pnf. Integrate Fujitsu fix for up to 50 UEs. Apply astyle to all modified files in the branch

For whatever reason most of the files had their permission
changed from 644 to 755, which is not wanted.

S1AP PATH SWITCH REQUEST/REQUEST ACK/FAILURE
RRC MEASUREMENT REPORT
MINOR CHANGES IN MAC LAYER

RRC timer thres removed from UE context and added to eNB RRC context, value 0 of thres equivalent to infinity