cc/gcc: fix gcc 4.8 build for C library without threads support

Signed-off-by: Niels Penneman <niels@penneman.org>
Message-Id: <309df93f4354c80e05c9.1388743085@i7sb.local>
Patchwork-Id: 306521

#!/bin/sh

call_to=@@DEFAULT_LD@@

case "${CTNG_LD_IS}" in

    bfd)    call_to=bfd;;

    gold)   call_to=gold;;

esac

exec "${0}.${call_to}" "$@"

exit $?