bug#16838: Confusing localization of seq

[Göran Uddeborg]

It seems the input arguments of "seq" are not localized, but the
output is.  I was surprised to find this, and thought I'd ask here if
it is an intentional decision.

More specifically, I'm using the Swedish locale, where the radix
character is a comma.  The arguments to "seq" does not accept a comma,
but the output is written using it.

    mimmi$ env LANG=sv_SE.utf8 seq 1 0.3 2
    1,0
    1,3
    1,6
    1,9

I realized this using coreutils-8.21 on Fedora.