Reviewed by Dan Bernstein.

        <rdar://problem/6631735> Crash in WebCore::CSSStyleSelector::applyProperty(int, WebCore::CSSValue*) (RenderStyle.h:454)
        
        Avoid re-entering style selector from load delegates by not issuing resource loads synchronously during attach().

        * dom/ContainerNode.cpp:
        (WebCore::ContainerNode::suspendPostAttachCallbacks):
        (WebCore::ContainerNode::resumePostAttachCallbacks):
        (WebCore::ContainerNode::attach):
        * dom/Element.cpp:
        (WebCore::Element::attach):
        * loader/loader.cpp:
        (WebCore::Loader::Loader):
        (WebCore::Loader::servePendingRequests):
        (WebCore::Loader::suspendPendingRequests):
        (WebCore::Loader::resumePendingRequests):
        (WebCore::Loader::Host::servePendingRequests):
        * loader/loader.h:
        (WebCore::Loader::isSuspendingPendingRequests):



git-svn-id: http://svn.webkit.org/repository/webkit/trunk@43152 268f45cc-cd09-0410-ab3c-d52691b4dbfc