in case we have to abort the program, debugging is enabled and we are not

in case we have to abort the program, debugging is enabled and we are not

Mon Sep 13 23:25:59 1999  Tim Janik  <timj@gtk.org>

        * gmessages.c (g_logv): in case we have to abort the program,
        debugging is enabled and we are not called recursively, try
        to abort with raise (SIGTRAP) first, so developers may ignore
        certain failure conditions during debugging stage.