[WWWOFFLE-Users] valid AddCacheInfo for both XHTML and HTML

[Dan Jacobson]

The average Wikipedia page triggers
   element "STYLE" undefined
in validator programs due to AddCacheInfo.

If "STYLE" was made "style" then at we still get
  document type does not allow element "style" here

Then of course there's also
  end tag for "hr" omitted, but OMITTAG NO

Ah, maybe there ought to be different AddCacheInfos for different
doctypes. AddCacheInfo.html, AddCacheInfo.xhtml.