Use freshen DocBook 4.5 DTD in xml documents
Use freshen DocBook 4.5 DTD in xml documents

Switch to "OASIS//DocBook XML V4.5" DTD.
Signed-off-by: Tomasz Kłoczko <00dd7c265be03c381150912b5b8354033eccfa1d@github.com>

GNOME/gupnp,GNOME/gupnp,GNOME/gupnp,GNOME/gupnp