[Cpptool-develop] VC++ 6.0 add-in added

[Baptiste L. <gai...@fr...>]

    I added the add-in for VC++ 6. It lives in src/rftavc6addin.

    It only did a little testing, so be careful. Though, it seems to be
working fine.

    Install instruction:
    - compile the add-in project in release configuration
    - exit VC++
    - run bin/install-vc6-addin.bat, which should copy the necessary dll in
the VC++ add-in directory (if your environment variable are configured
correctly)
    - run VC++ and activate the add-in in Tools/Customize...

    You will see a new ugly toolbar (anyone got an idea for icons ?). If you
want to bind the command to the keyboard, search for a command starting with
'RftaRenameLocaleVariable' in the add-in category.

    Have fun,
    Baptiste.