Merge branch 'voicemngr_rdkb' into devel

Head of devel before merging: 7be53608
Head of tr104_rdkb to merge:  eaf0318e

Manually fixed conflicts:
libvoice/libvoice.h
libvoice/voice-types.h
line-dect.c
line.c
line.h
ubus.c
ubus.h

Automatically merged:
libvoice/common.c
main.c