bugfix: do not trap normal exit on dl deps script

# Stop all backround jobs on interruption.

# "kill -- -$$" sends a SIGTERM to the whole process group,

# thus killing also descendants.

trap "trap - SIGTERM && kill -- -$$" SIGINT SIGTERM EXIT

trap "trap - SIGTERM && kill -- -$$" SIGINT SIGTERM

exit_child() {

    if [ ! $? -eq 0 ]; then

        # notify the parent

        kill -s SIGTERM `ps --pid $$ -oppid=`

        kill -s SIGTERM -- -$$

    fi

}