[Groff] shc issue resolved

[Werner LEMBERG]

>From the NEWS file:

  Using the latin-1 input character 0xAD (soft hyphen) for the `shc'
  request was a bad idea.  Instead, it is now translated to `\%', and
  the default hyphenation character is again \[hy].  Note that the
  glyph \[shc] is not useful for typographic purposes; it only exists
  to have glyph names for all latin-1 characters.



    Werner