fix some exit situations, that was badly done by SIGUSR1 handler

common/config/config_cmdline.c

common/config/config_userapi.c

common/config/config_userapi.h

common/utils/ocp_itti/intertask_interface.cpp

common/utils/telnetsrv/telnetsrv_proccmd.c

openair1/PHY/defs_common.h

openair1/SIMULATION/LTE_PHY/unitary_defs.h

openair2/COMMON/platform_types.h

openair2/ENB_APP/flexran_agent_common_internal.c

targets/RT/USER/lte-enb.c

targets/RT/USER/lte-softmodem.c

targets/RT/USER/lte-softmodem.h

targets/RT/USER/lte-uesoftmodem.c