Apache license in local copies of third party files?

[Andrea Smyth]

Hi Cliff,

In CXF we use local copies for a number of third party resources, such 
as wsdl.xsd, wsrm.xsd etc.. The reason for this is to avoid having the 
CXF build depend on the accessibility of the remote sites hosting these 
resources.
These files all come with their respective license embedded (e.g. 
see http://schemas.xmlsoap.org/wsdl/ or 
http://schemas.xmlsoap.org/ws/2005/02/rm/wsrm-policy.xsd).
If we leave them unchanged, do we still have to add an Apache license to 
them?

Thanks,
Andrea.