vl: Make -machine $TYPE,help and -accel help print to stdout
Command line help help explicitly requested by the user should be printed to stdout, not stderr. We do elsewhere. Adjust -machine $TYPE,help and -accel help to match: use printf() instead of error_printf(). Cc: Marcel Apfelbaum <marcel.apfelbaum@gmail.com> Signed-off-by: NMarkus Armbruster <armbru@redhat.com> Reviewed-by: NMarcel Apfelbaum <marcel.apfelbaum@gmail.com> Message-Id: <20190417190641.26814-10-armbru@redhat.com>
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