Re: RFC: status icon support

[Richard Stallman]

    dnl EMACS_ARG_Y(NAME, HELP-STRING, [IF-GIVEN], [IF-NOT-GIVEN])
    dnl Define a new --with option which is disabled by default.

If that is the meaning, the name is counterintuitive.
Let's rename EMACS_ARG_Y to OPTION_DEFAULT_OFF,
and rename EMACS_ARG_N to OPTION_DEFAULT_ON.

    dnl NAME is the base name of the option.
    dnl HELP-STRING is the help text for the option.  It should not include
    dnl    the option name; this macro provides that to AS_HELP_STRING.
    dnl IF-GIVEN and IF-NOT-GIVEN are the same as for AC_ARG_WITH.

That text is clear.