Reviewed by Adele.

        - fix http://bugs.webkit.org/show_bug.cgi?id=15525
          transpose (control-T) should do the last two characters on a line if at end of line
        - remove unused CommandByName class
        - move transpose command implementation here from Mac OS X WebKit

        * editing/Editor.h:
        * editing/Editor.cpp:
        (WebCore::execTranspose): Added.
        (WebCore::Editor::transpose): Added. This has the transpose implementation from
        WebCoreFrameBridge and WebHTMLView, translated into WebCore-style C++ and with
        a special case for the end of a paragraph.

        * page/Frame.h: Removed unused command() function member.
        * page/FramePrivate.h: Removed unused m_command data member.
        * page/Frame.cpp: Ditto.

        * page/mac/WebCoreFrameBridge.h: Removed rangeOfCharactersAroundCaret method.
        * page/mac/WebCoreFrameBridge.mm: Ditto.

        * WebCore.pro: Removed CommandByName.h/cpp.
        * WebCore.vcproj/WebCore.vcproj: Ditto.
        * WebCore.xcodeproj/project.pbxproj: Ditto.

        * editing/CommandByName.cpp: Removed.
        * editing/CommandByName.h: Removed.

WebKit:

        Reviewed by Adele.

        - moved transpose command implementation into WebCore

        * WebView/WebHTMLView.mm: Removed transpose: and replaced it with standard WebCore forwarding.



git-svn-id: http://svn.webkit.org/repository/webkit/trunk@26683 268f45cc-cd09-0410-ab3c-d52691b4dbfc