* sms: Introduce VTY-configurable minimum SMS validity period
* sms: Make default SMS validity period configurable via VTY
* smpp: Parse and use SMPP-provided validity period
* sms_queue: Make deletion of messages from DB VTY-configurable
* sms_queue: Use local variable rather than 9x pointer de-ref in function
* sms: Give smsc its own VTY config node
* libmsc/mncc_call.c: fix uninitialized access of stack memory
* libmsc/ran_msg_a.c: prevent chosen_encryption->key buffer overrun
* libmsc/ran_msg_a.c: refactor ran_a_decode_lcls_notification()
* libmsc/ran_msg_a.c: avoid ternary operator in struct initialization
* libmsc/gsm_04_11.c: fix NULL-pointer dereference in gsm340_rx_tpdu()
* sms_queue_test: assert return value of osmo_use_count_get_put()
* libmsc/msc_a.c: fix possible NULL-pointer dereferences
* libmsc/msc_ho.c: fix unreacheable check of MSC-T role allocation
* libmsc/sgs_server.c: do not override rc in case of SCTP_SHUTDOWN_EVENT