Cleanup of my patch last night and merging with aroben-style changes from this morning
        (More ref-counted FormData stuff)

        * html/HTMLFormElement.cpp:
        (WebCore::HTMLFormElement::submit):
        * loader/FrameLoader.cpp:
        (WebCore::FrameLoader::submitForm):
        * platform/network/ResourceHandle.cpp:
        (WebCore::ResourceHandle::postData):
        * platform/network/ResourceHandle.h:
        * platform/network/cf/FormDataStreamCFNet.cpp:
        (WebCore::setHTTPBody):
        * platform/network/mac/FormDataStreamMac.h:
        * platform/network/mac/FormDataStreamMac.mm:
        (WebCore::getStreamFormDatas):
        (WebCore::formCreate):
        (WebCore::formFinalize):
        (WebCore::setHTTPBody):
        (WebCore::httpBodyFromStream):
        * platform/network/mac/ResourceRequestMac.mm:
        (WebCore::getResourceRequest):



git-svn-id: http://svn.webkit.org/repository/webkit/trunk@17762 268f45cc-cd09-0410-ab3c-d52691b4dbfc