correction of 7.5kHz handling during initial synchronization. Increase in dynamic range of SSS detection

Conflicts:
	openair1/SIMULATION/LTE_PHY/dummy_functions.c

integration of L1/L2 sidelink synchronization. USRP interfaces and threading for sidelink. Currently only HW support for off-network case.

Conflicts:
	cmake_targets/CMakeLists.txt
	cmake_targets/build_oai
	common/config/config_cmdline.c
	open-nfapi.oai.patch
	openair1/PHY/INIT/lte_init.c
	openair1/PHY/LTE_TRANSPORT/dci.c
	openair1/PHY/LTE_TRANSPORT/dci_tools.c
	openair1/PHY/LTE_TRANSPORT/drs_modulation.c
	openair1/SCHED/fapi_l1.c
	openair1/SCHED/phy_procedures_lte_eNb.c
	openair1/SCHED/phy_procedures_lte_ue.c
	openair1/SCHED/ru_procedures.c
	openair2/ENB_APP/enb_app.c
	openair2/ENB_APP/enb_config.c
	openair2/ENB_APP/enb_paramdef.h
	openair2/ENB_APP/flexran_agent_common.c
	openair2/LAYER2/MAC/config.c
	openair2/LAYER2/MAC/defs.h
	openair2/LAYER2/MAC/eNB_scheduler.c
	openair2/LAYER2/MAC/eNB_scheduler_RA.c
	openair2/LAYER2/MAC/eNB_scheduler_bch.c
	openair2/LAYER2/MAC/eNB_scheduler_dlsch.c
	openair2/LAYER2/MAC/eNB_scheduler_mch.c
	openair2/LAYER2/MAC/eNB_scheduler_primitives.c
	openair2/LAYER2/MAC/eNB_scheduler_ulsch.c
	openair2/LAYER2/MAC/flexran_agent_scheduler_dataplane.c
	openair2/LAYER2/MAC/flexran_agent_scheduler_dlsch_ue.c
	openair2/LAYER2/MAC/main.c
	openair2/LAYER2/MAC/pre_processor.c
	openair2/LAYER2/MAC/proto.h
	openair2/LAYER2/MAC/ra_procedures.c
	openair2/LAYER2/MAC/ue_procedures.c
	openair2/LAYER2/PDCP_v10.1.0/pdcp.c
	openair2/LAYER2/PDCP_v10.1.0/pdcp_fifo.c
	openair2/LAYER2/RLC/rlc_rrc.c
	openair2/PHY_INTERFACE/IF_Module.c
	openair2/RRC/LITE/L2_interface.c
	openair2/RRC/LITE/defs.h
	openair2/RRC/LITE/proto.h
	openair2/RRC/LITE/rrc_UE.c
	openair2/RRC/LITE/rrc_common.c
	openair2/RRC/LITE/rrc_eNB.c
	openair2/UTIL/LOG/log.c
	openair2/UTIL/LOG/log.h
	openair3/GTPV1-U/gtpv1u_eNB.c
	targets/ARCH/USRP/USERSPACE/LIB/usrp_lib.cpp
	targets/COMMON/create_tasks.c
	targets/PROJECTS/GENERIC-LTE-EPC/CONF/oaiL1.nfapi.usrpb210.conf
	targets/PROJECTS/GENERIC-LTE-EPC/CONF/rcc.band7.tm1.50PRB.nfapi.conf
	targets/RT/USER/lte-enb.c
	targets/RT/USER/lte-ru.c
	targets/RT/USER/lte-softmodem.c
	targets/RT/USER/lte-softmodem.h
	targets/RT/USER/lte-ue.c
	targets/SIMU/USER/channel_sim.c

The PHICH was not programmed for the last round (4) because it was
not programmed in rx_sdu but in schedule_ulsch_rnti, only in case
of a programmed retransmission (there is obviously no retransmission
programmed after the last round).

The case of Msg3 is not handled. To be done somehow.