Allow =val to be omitted for yaz_uri_to_array
Allow =val to be omitted for yaz_uri_to_array

Also, multiple &'s in sequence is treated as one. For example,
&&a=b&&&c& is identical to a=b&c= .

nla/yaz,dcrossleyau/yaz,dcrossleyau/yaz,nla/yaz,nla/yaz,nla/yaz,dcrossleyau/yaz