Reviewed by Richard.

    Reviewed by Richard.

        - fixed <rdar://problem/4037700> Every character typed causes stat call for /usr/share/icu/icudt32b_char.brk

        * khtml/rendering/render_text.cpp:
        (getCharacterBreakIterator): Added. Helper that sets up an iterator for the passed-in text.
        Shares a single global iterator (fast, albeit not thread-safe).
        (RenderText::previousOffset): Changed to call getCharacterBreakIterator.
        (RenderText::nextOffset): Ditto.

git-svn-id: https://svn.webkit.org/repository/webkit/trunk@8796 268f45cc-cd09-0410-ab3c-d52691b4dbfc