Re: windows-1251 language environment

[Richard Stallman]

    If you had taken the time while hacking cyrillic.el to search for
    "1251", you would find that the "Windows-1251" language environment
    has been replaced by "Bulgarian" and "Belarusian" environments, that
    in addition to using windows-1251 as their default coding-system,
    also configure the default input method appropriately. Since
    "Windows-1251" is not a language, and "Bulgarian" and "Belarusian"
    are, that seems like a good change to me.

Should we keep supporting the name Windows-1251 as an alias
for compatibility reasons?