Dummy export for Text.Show.Functions

[Christian Maeder]

Thomas Jäger wrote:
>>Warning: Module `Text.Show.Functions' is imported, but nothing from it is used           
>>       (except perhaps instances visible in `Text.Show.Functions')

You can explicitely import "nothing" (only instances) by:

import Text.Show.Functions()

And ghc-6.4 issues no warning.

Christian