(*) fix order of headers (*) include the right headers in span.hxx (*) use std::memcmp instead of memcmp (*) clear entries from cache when the namespaces array is resized Change-Id: I04319bbaa84369e5470799578fadcda66a591c9f Reviewed-on: https://gerrit.libreoffice.org/80347 Tested-by: Jenkins Reviewed-by: Noel Grandin <noel.grandin@collabora.co.uk>