Based on a previous patch by Noel Grandin,
<https://gerrit.libreoffice.org/#/c/3613/>, and borrowing from
boost::is_base_and_derived (see comment in include/com/sun/star/uno/Reference.h)
to avoid including Boost headers in URE headers.

Change-Id: Iade5af144dd73ef03bd7d96000134c7a66a5e591
Reviewed-on: https://gerrit.libreoffice.org/3699Tested-by: LibreOffice gerrit bot <gerrit@libreoffice.org>
Reviewed-by: Stephan Bergmann <sbergman@redhat.com>
Tested-by: Stephan Bergmann <sbergman@redhat.com>