complibs/cloog: catch autogen.sh's output

Run autogen.sh through CT_DoExecLog to catch its output.

Signed-off-by: "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>
(transplanted from fcf5c43cf30f11366d4fe16ee19d6c2143985c62)

#!/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 $?