Merge remote-tracking branch 'origin/new-gtpu' into integration_2020_wk15

Conflicts:
	cmake_targets/CMakeLists.txt
	openair1/PHY/TOOLS/time_meas.h
	openair2/LAYER2/PDCP_v10.1.0/pdcp_fifo.c
	openair2/LAYER2/RLC/rlc.h

executables/softmodem-common.c

@@ -45,6 +45,8 @@
 static softmodem_params_t softmodem_params;
 char *parallel_config=NULL;
 char *worker_config=NULL;
+msc_interface_t msc_interface;
+int usrp_tx_thread = 0;
 
 uint8_t nfapi_mode=0;