* catch CTRL^C in oaisim, and handle oaisim shutdown (not fully tested)

common/utils/collection/hashtable/obj_hashtable.h

openair2/LAYER2/RLC/rlc_mac.c

openair2/UTIL/OSD/OpenAirEmu.conf

openair3/RAL-LTE/LTE_RAL_ENB/INCLUDE/lteRALenb_main.h

openair3/RAL-LTE/LTE_RAL_UE/INCLUDE/lteRALue_main.h

targets/PROJECTS/GENERIC-LTE-EPC/CONF/enb.sfr.sud.conf

targets/RTAI/USER/Makefile

targets/SIMU/USER/Makefile

targets/SIMU/USER/oaisim.c

targets/SIMU/USER/oaisim_config.c