removed useless g_string(x) macro that cluttered the namespace and was

removed useless g_string(x) macro that cluttered the namespace and was

Tue Oct 12 14:17:12 1999  Tim Janik  <timj@gtk.org>

        * glib.h: removed useless g_string(x) macro that cluttered the namespace
        and was just a poor wrapper around the cpp '#' symbol, use #x if you
        need to work around this.
        added new macro G_STRINGIFY(arg) that will convert arg to a string,
        no matter whether it contains macros or not.