Merge branch 'PR/parse_switch' of https://github.com/karelzak/util-linux-work

* 'PR/parse_switch' of https://github.com/karelzak/util-linux-work:
  fix and add parse_switch() test
  strutils: move an error message to where it is used, and improve it
  irqtop: use standard 'always/never' arguments instead of 'enable/disable'

diff --cc lib/strutils.c
Simple merge

diff --cc sys-utils/irqtop.c
Simple merge