Merge branch 'lsclocks/relative-time' of https://github.com/t-8ch/util-linux

Merge branch 'lsclocks/relative-time' of https://github.com/t-8ch/util-linux

* 'lsclocks/relative-time' of https://github.com/t-8ch/util-linux:
  lsclocks: add column RESOL for clock resolution
  lsclocks: rename column RESOLUTION to RESOL_RAW
  lsclocks: add relative time
  timeutils: add strtimespec_relative
  lib/timeutils: (tests) add test for formatting
  lib/timeutils: (tests) move to struct timespec
  lsclocks: trim default columns
  lsclocks: add --output-all