x-use-underline-position-properties

[Eli Zaretskii]

This change:

    2002-02-05  Pavel Jani'k  <address@hidden>

            * cus-start.el (x-use-underline-position-properties):
            Allow customization.

adds to cus-start.el a variable declared on xterm.c.  Non-GUI
versions, such as Emacs compiled --without-x or the MS-DOS port,
don't have this variable, so loadup.el prints a warning.

I can easily eliminate the warning for the DOS port, by declaring the
variable in some DOS-specific file, but is that the right way to solve
this, and what should we do to avoid the warning in the Unix version
compiled without X support?