Normalize unicode by calling java native functions in eXist 2.2 where normalize-unicode() doesn't work.

normalize.xq

xquery version "3.0";

(:
  Sadly, the eXist 2.2 normalize-unicode() function is broken. So we call out
  to the java one.
:)
declare namespace normalizer = "java:java.text.Normalizer";
declare namespace form = "java:java.text.Normalizer$Form";

declare function local:normalize($string as item()) as xs:string {
    normalizer:normalize($string, form:value-of('NFD'))
};