Beginning of work to support the Acid2 CSS test put forward by the Web Standards...

	Beginning of work to support the Acid2 CSS test put forward by the Web Standards Project.  Fix
	our handling of the rel attribute on <link> elements to do a proper tokenization so that stylesheets
	can be recognized even when other keywords are present in the rel attribute.

        * khtml/html/html_headimpl.cpp:
        (HTMLLinkElementImpl::HTMLLinkElementImpl):
        (HTMLLinkElementImpl::parseHTMLAttribute):
        (HTMLLinkElementImpl::tokenizeRelAttribute):
        (HTMLLinkElementImpl::process):
        * khtml/html/html_headimpl.h:

git-svn-id: https://svn.webkit.org/repository/webkit/trunk@9002 268f45cc-cd09-0410-ab3c-d52691b4dbfc