Blocker Description
Moving the non-JSF specified HTML 4.0 <img> attributes out of HtmlGraphicImageTagBase and into the extension HtmlGraphicImageTag (as was appropriate) caused MyFaces to break on Weblogic 8.1 because Weblogic validates the .tld and checks that there are appropriate setters in the *Tag class for each specified <attribute>. Since HtmlSwapImageTag was extending HtmlGraphicImageTagBase, it no longer has the appropriate fields.
Upon investigation it seems that someone added the border attribute back to HtmlGraphicImageTagBase after MYFACES-363 was closed, presumably because it was breaking the SwapImage example page that makes use of the border attribute.
It seems to me that the better solution is to have HtmlSwapImageTag extend org.apache.myfaces.taglib.html.ext.HtmlGraphicImageTag, so as to retain the ability to include the HTML 4.0 <img> attributes while not breaking compliance of <h:graphicImage> with the JSF 1.1 spec.