Reviewed by Darin.

    Reviewed by Darin.

	<rdar://problem/3770306> XMLHttpRequest does not honor character set encoding

        * khtml/ecma/xmlhttprequest.cpp:
        (KJS::XMLHttpRequest::slotData): Get encoding from the transfer job.
        * kwq/KWQKJobClasses.h:
        * kwq/KWQKJobClasses.mm:
        (KIO::TransferJobPrivate::TransferJobPrivate): Added retrievedCharset
	flag.
        (KIO::TransferJob::retrieveCharset): New method, gets the charset
	from the response.
        (KIO::TransferJob::queryMetaData): Handle charset.
        (KIO::TransferJob::emitReceivedResponse): Clear retreivedCharset flag.
        * kwq/KWQLoader.h:
        * kwq/KWQLoader.mm:
        (KWQResponseTextEncodingName): New function, gets the encoding from the response.

git-svn-id: https://svn.webkit.org/repository/webkit/trunk@7323 268f45cc-cd09-0410-ab3c-d52691b4dbfc