Reviewed by Dan Bernstein.

        Add parsing of AccessControlHeader and AccessItemRule.

        * xml/AccessControlList.cpp:
        (WebCore::AccessControlList::parseAccessControlHeader): When multiple http headers are sent
        in the response, the engine will concatenate them with commas separating the rules.  This simply
        reverses that process by splitting on the commas.
        (WebCore::AccessControlList::show):
        * xml/AccessControlList.h:
        * xml/AccessItem.cpp:
        (WebCore::AccessItem::AccessItem):
        (WebCore::AccessItem::show):
        * xml/AccessItem.h:
        (WebCore::AccessItem::isValid):
        * xml/AccessItemRule.cpp:
        (WebCore::skipLWS):
        (WebCore::AccessItemRule::parseAccessItemRule): Parse the rule according to the BNF provided by
        the Access Control spec.
        (WebCore::AccessItemRule::parsePatternList):
        (WebCore::AccessItemRule::invalidate):
        (WebCore::AccessItemRule::show):
        * xml/AccessItemRule.h:



git-svn-id: http://svn.webkit.org/repository/webkit/trunk@33065 268f45cc-cd09-0410-ab3c-d52691b4dbfc