- fix http://bugzilla.opendarwin.org/show_bug.cgi?id=6452
         KURL::appendEscapingBadChars() doesn't know about %u-escaping.

        Test case: fast/encoding/percent-escaping.html

        * kwq/KWQKURL.mm: (appendEscapingBadChars):
        Rather than adding support for %u, remove the existing
        "do what I mean" escaping of percent characters that do not
        look like a result of prior escaping.



git-svn-id: http://svn.webkit.org/repository/webkit/trunk@12814 268f45cc-cd09-0410-ab3c-d52691b4dbfc