[OAI-implementers] Update to OAI Validation service

[Simeon Warner]

I have put a reworked version of the OAI validation service online. This 
does a few checks that the old version missed and gives diagnostic 
messages that I hope will be more useful. As always, if you think the 
messages are wrong or confusing, please contact 
openarchives at openarchives.org

Validation service:
   http://www.openarchives.org/Register/ValidateSite
Browse sites:
   http://www.openarchives.org/Register/BrowseSites

Cheers,
Simeon