this and some cleanup, duplicate defs in .h file

Conflicts:
	common/config/config_userapi.h
	openair2/ENB_APP/enb_config.c
	targets/RT/USER/lte-softmodem.c

Conflicts:
	openair1/PHY/INIT/lte_init.c
	openair1/PHY/LTE_ESTIMATION/defs.h
	openair1/PHY/LTE_ESTIMATION/lte_ue_measurements.c
	openair1/PHY/LTE_TRANSPORT/dci.c
	openair1/PHY/LTE_TRANSPORT/dci_tools.c
	openair1/PHY/LTE_TRANSPORT/defs.h
	openair1/PHY/LTE_TRANSPORT/dlsch_decoding.c
	openair1/PHY/LTE_TRANSPORT/dlsch_demodulation.c
	openair1/PHY/LTE_TRANSPORT/dlsch_llr_computation.c
	openair1/PHY/LTE_TRANSPORT/if5_tools.c
	openair1/PHY/LTE_TRANSPORT/phich.c
	openair1/PHY/LTE_TRANSPORT/proto.h
	openair1/PHY/defs.h
	openair1/SCHED/phy_procedures_lte_eNb.c
	openair1/SCHED/phy_procedures_lte_ue.c
	openair1/SCHED/pusch_pc.c
	openair2/ENB_APP/enb_config.c
	openair2/LAYER2/MAC/defs.h
	openair2/LAYER2/MAC/eNB_scheduler.c
	openair2/LAYER2/MAC/eNB_scheduler_dlsch.c
	openair2/LAYER2/MAC/eNB_scheduler_primitives.c
	openair2/LAYER2/MAC/eNB_scheduler_ulsch.c
	openair2/LAYER2/MAC/pre_processor.c
	openair2/LAYER2/MAC/ue_procedures.c
	targets/RT/USER/lte-enb.c
	targets/RT/USER/lte-softmodem.c
	targets/RT/USER/lte-softmodem.h
	targets/RT/USER/lte-ue.c
	targets/SIMU/USER/init_lte.c
	targets/SIMU/USER/oaisim_functions.c

Improve configuration module error management at init time, Fix command line help option processing, remove shotopt field from parameter structure

Fix configuration module shared library improperly build and not loadable when libconfig version is below 1.5

push 2 hours ago just before i retrieved the branch...

lte-softmodem -O <config file> will trigger legacy config mode
ltesoftmodem  -O libconfig:<config file> will trigger configuration module usage.

- carrier->MIB will be reused, so "spare" has to be allocated
- wrong parameters sent to uper_encode_to_buffer