Reviewed by Justin Garcia.

    Reviewed by Justin Garcia.

        - fixed <rdar://problem/4151619> Safari changes "\" characters to "/" in the query part of links that start with "?"

        Test cases added:
        * layout-tests/fast/dom/anchor-backslash-expected.txt: Added.
        * layout-tests/fast/dom/anchor-backslash.html: Added.

        * kwq/KWQKURL.mm: (substituteBackslashes): Fix error where we'd ignore
        "?" and "#" characters if they were the first character in the string.

git-svn-id: https://svn.webkit.org/repository/webkit/trunk@9481 268f45cc-cd09-0410-ab3c-d52691b4dbfc