Reviewed by Adele Peterson.

        Add 'files' property to the HTMLInputElement, which returns a FileList object 
        (when type=file, null otherwise) containing a list of all the files selected.
        It currently always contains only 0 or 1 files as multifile input is not supported 
        yet.  The list contains File objects which contains the name and size of the file. 
        The inspiration for these interfaces is from:
            - http://developer.mozilla.org/en/docs/nsIDOMFileList
            - http://developer.mozilla.org/en/docs/nsIDOMFile

        Also fixes <rdar://problem/6022802>

        * DerivedSources.make:
        * GNUmakefile.am:
        * WebCore.pro:
        * WebCore.vcproj/WebCore.vcproj:
        * WebCore.xcodeproj/project.pbxproj:
        * WebCoreSources.bkl:
        * bindings/objc/DOMInternal.h:
        * bindings/scripts/CodeGenerator.pm:
        * bindings/scripts/IDLStructure.pm:
        * html/File.cpp: Added.
        (WebCore::File::File):
        (WebCore::File::fileSize):
        * html/File.h: Added.
        (WebCore::File::create):
        (WebCore::File::fileName):
        (WebCore::File::path):
        * html/File.idl: Added.
        * html/FileList.cpp: Added.
        (WebCore::FileList::FileList):
        (WebCore::FileList::item):
        * html/FileList.h: Added.
        (WebCore::FileList::create):
        (WebCore::FileList::length):
        (WebCore::FileList::isEmpty):
        (WebCore::FileList::clear):
        (WebCore::FileList::append):
        * html/FileList.idl: Added.
        * html/HTMLInputElement.cpp:
        (WebCore::HTMLInputElement::setInputType):
        (WebCore::HTMLInputElement::appendFormData):
        (WebCore::HTMLInputElement::value):
        (WebCore::HTMLInputElement::setValue):
        (WebCore::HTMLInputElement::setValueFromRenderer):
        (WebCore::HTMLInputElement::files):
        * html/HTMLInputElement.h:
        * html/HTMLInputElement.idl:
        * page/DOMWindow.idl:



git-svn-id: http://svn.webkit.org/repository/webkit/trunk@34702 268f45cc-cd09-0410-ab3c-d52691b4dbfc