Update xterm to version 384 / rev 139 via SR 1098828
    
    https://build.opensuse.org/request/show/1098828
    by user msmeissn + anag+factory
    - update to 384:
      * exclude  ASCII  space  from  showMissingGlyphs,  since a few
        bitmap fonts lack this
      * correct   a   step   in   rendering  double-width  characters
        with bitmap-fonts
      * fixes for ReGIS-related problems:
        * mimic  an  undocumented  hardware  VT340 feature
          which handles color initialization with incomplete parameters.
        * handle whitespace between operator/operands for
          color values.
        * reset ReGIS-context when resetting graphics in RIS. (forwarded request 1098806 from dirkmueller)