Merge branch 'PR/Benno-31Mar' of https://github.com/karelzak/util-linux-work

Merge branch 'PR/Benno-31Mar' of https://github.com/karelzak/util-linux-work

* 'PR/Benno-31Mar' of https://github.com/karelzak/util-linux-work:
  tests: update coresched tests
  coresched: reduce excessive whitespace and verbosity in usage text
  lsblk: (man) remove the incorrect spaces between the arguments of --ct
  hardlink: fix typoed semicolon to colon in error message
  findmnt: (man) remove duplicated option, and correct a description
  irqtop: improve several more option descriptions, and align them all
  irqtop: improve the description of --batch, and align it with others
  last: don't use a tab character in the --help usage text
  uclampset: simplify the synopsis in the --help usage text
  enosys: add the missing arguments of -s and -i to the usage text