Merge branch 'feat/allow_killing_with_pidfd' of https://github.com/cgoesche/util...

* 'feat/allow_killing_with_pidfd' of https://github.com/cgoesche/util-linux-fork:
  textual: rename list_colunms() to list_columns() and remove trailing whitespaces
  include/strutils: add missing header guard comment
  lib: fix bad indentation in meson.build
  kill: add support for race-free process kills using pidfd inodes

diff --cc lib/Makemodule.am
Simple merge

diff --cc meson.build
Simple merge

diff --cc misc-utils/lslocks.c
Simple merge

diff --cc tests/commands.sh
Simple merge