- http://bugzilla.opendarwin.org/show_bug.cgi?id=6642
          Split XMLHttpRequest class into JS binding and implementation

        * WebCore.xcodeproj/project.pbxproj: Adjusted for moved and renamed files.
        New group "xml" to match directory structure.
        * xml: Added.
        * khtml/ecma/JSXMLHttpRequest.cpp: Added.
        * khtml/ecma/JSXMLHttpRequest.h: Added.
        * khtml/ecma/xmlhttprequest.cpp: Removed.
        * khtml/ecma/xmlhttprequest.h: Removed.
        * xml/xmlhttprequest.cpp: Added.
        * xml/xmlhttprequest.h: Added.
        * khtml/ecma/kjs_binding.cpp:
        (KJS::jsStringOrUndefined): Moved from kjs_events.cpp.
        * khtml/ecma/kjs_binding.h: Added prototype for jsStringOrUndefined().
        * khtml/ecma/kjs_events.cpp: Removed jsStringOrUndefined().
        * khtml/ecma/kjs_window.cpp: 
        (KJS::Window::getValueProperty): Use new class name for JSXMLHttpRequest.
        * kwq/KWQSlot.cpp: XMLHttpRequestQObject is now in WebCore, not KJS.
        * page/Frame.cpp:
        (Frame::stopLoading): XMLHttpRequest is now in WebCore, not KJS.



git-svn-id: http://svn.webkit.org/repository/webkit/trunk@12282 268f45cc-cd09-0410-ab3c-d52691b4dbfc