tr broken in r18281

[Bernhard Fischer]

On Fri, Mar 30, 2007 at 10:45:09AM -0700, David Daney wrote:
>I do: make ARCH=mipsel-linux CROSS_COMPILE=mipsel-linux-
>.
>.
>.
>  CC      coreutils/tr.o
>coreutils/tr.c: In function `expand':
>coreutils/tr.c:127: error: `classes' undeclared (first use in this function)

Fixed in r18283. Sorry..