merge develop branch

cmake_targets/CMakeLists.txt

cmake_targets/build_oai

common/config/config_cmdline.c

common/config/config_load_configmodule.c

common/config/config_load_configmodule.h

common/config/config_userapi.c

common/config/config_userapi.h

common/config/libconfig/config_libconfig.c

openair1/PHY/LTE_TRANSPORT/if4_tools.c

openair1/PHY/LTE_TRANSPORT/if4_tools.h

openair1/PHY/LTE_TRANSPORT/pucch.c

openair1/PHY/defs.h

openair1/SCHED/phy_procedures_lte_ue.c

openair2/ENB_APP/enb_config.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