Merge branch 'mbsencode' of https://github.com/yontalcar/util-linux

Merge branch 'mbsencode' of https://github.com/yontalcar/util-linux

* 'mbsencode' of https://github.com/yontalcar/util-linux:
  tests: mark mbsencode as KNOWN_FAIL
  tests: mbsencode - test for HAVE_WIDECHAR
  lib/mbsalign: Fix escaping nonprintable multibyte characters
  tests: mbsencode - removed emoji, added control unicode character
  tests: add tests for encode functions from lib/mbsalign.c
  lib/mbsalign: escape "\x" when HAVE_WIDECHAR not defined