scripts: update mk-release to cope with the new autoconf framework

Now that ./configure is generated by autoconf, it must be generated
before the release tarball is made. So, we can not simply use hg's
archive, we must post-process it.

Signed-off-by: "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>

#!/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 $?