This makes the following queries equivalent:

    vut -g request -q '*Error' -q 'BerespStatus >= 500'

    vut -g request -q '
        *Error
        BerespStatus >= 500
    '

    vut -g request -q '(*Error) or (BerespStatus >= 500)'

We now have two ways to express "compound" VSL queries, although this
ultimately relies on multiline queries.