Merge remote-tracking branch 'origin/develop-uedirectorysplit' into develop_integration_2018_w19

Status so far:
- monolithic eNB compiles and is functional with 1 UE in FDD, 5/10/20MHz.
  For 20MHz we don't have a nice TCP downlink (on haswell).
- oaisim does not compile
- UE does not compile
- phy simulators don't compile
- many new warnings

Conflicts:
	cmake_targets/CMakeLists.txt
	openair1/PHY/LTE_TRANSPORT/transport_eNB.h
	openair1/PHY/LTE_UE_TRANSPORT/transport_proto_ue.h
	openair1/PHY/defs_eNB.h
	openair1/SCHED/pusch_pc.c
	openair1/SCHED/sched_common.h
	openair1/SCHED_UE/phy_procedures_lte_ue.c
	openair2/LAYER2/MAC/eNB_scheduler.c
	openair2/LAYER2/MAC/eNB_scheduler_mch.c
	openair2/LAYER2/MAC/mac.h
	openair2/LAYER2/MAC/ra_procedures.c
	openair2/LAYER2/MAC/ue_procedures.c
	openair2/RRC/LTE/MESSAGES/asn1_msg.h
	openair2/RRC/LTE/rrc_UE.c
	openair2/RRC/LTE/rrc_defs.h
	targets/RT/USER/lte-softmodem.h
	targets/RT/USER/lte-ue.c