Modify kenb to kgnb
Modify some warnings

Modify kenb to kgnb
Modify some warnings

Reordered mod_table to support new changes in the function

adding executional option for usrp trx thread and adding null device function for device other than usrp

ENDC S1-U gNB support: Separate some GTP functions between eNB and gNB. Downlink traffic from SGW arrives properly at gNB now after path switch

Fix RFSIMULATOR issues (gNB side) after merge of NR_test_S1U_RRC_PRACH_procedures into NR_RRC_PRACH_procedures

When a header is changed, all including files need to be recompiled,
too. Thus, including a header needlessly all over the place drives
compile times up without any reason.

ENDC path switch S1-U: Integrated S1AP E-RAB-Modification indication message at eNB, interfacing with RRC and X2AP to get proper configuration of E-RABs to be modified and GTP-U configuration at gNB

ENABLE_ITTI macro removal, modified telnet server to support all executables, modified record player to finalize switch to run-time option and allow usage with any device

nr-ip noS1 uplink: Uplink IP traffic successfully received at the IP TUN interface of the gNB now. Logs cleanup.

build improvements: allow build mode selection (-g -G options) allow all exec build in one pass, remove remaining USE_MME macros in nr code

Mainly comestics and integer type management
Signed-off-by: Raphael Defosseux <raphael.defosseux@eurecom.fr>