[DDI-SRG] DDI 1/2.x DTD / XSchema discrepency

[Pascal Heus]

All:
I recently noticed that the DTD and XSchema of the DDI 1.2.2 and 1.3 
specifications published under the official URL have a small 
discrepency:  in the DTD, the <codeBook> element definition  contains 
both and an xml-lang and an xml:lang attributes. This however is not 
carried over in the XSchema definition where the xml:lang does not 
appear. See for example:
http://www.icpsr.umich.edu/DDI/Version1-2-2.dtd
http://www.icpsr.umich.edu/DDI/Version1-2-2.xsd
This actually caused the DDI produced by the latest version of the 
Nesstar Publisher (not yet released) to produce DDI-XML that did not 
properly validate (though being correct). I have notified the developers 
and they have switched to the xml-lang attribute. This is however 
something we may want to correct in the published schemas.
Also checked 1.02 and in that one both xml-lang and xml:lang are missing 
from the schema For 1.01 and 1.0, only the xml:lang exists in the DTD 
and is missing from the schemas.
The 2.0 and 2.1 xsd files do not have this problem.
How should we proceed to have these issues fixed in both CVS and on 
under the official http://www.icpsr.umich.edu/DDI/* URL's? Can we simply 
make the change or do we need to file an official bug?
best
*P