Deprecating haskell98 module aliases

[Yitzchak Gale]

Henning Thielemann wrote:
> Actually, when using GHCi I like to have the short Haskell98 module names.

I agree that the warning is less important in GHCi during
the deprecation stage.

However, for consistency, I think the Haskell98 names should
go away by default in GHCi when they go away in GHC.
You can always enable them manually if they are important
to you. Or use dot-ghci and/or :def commands to save
keystrokes when setting up your favorite GHCi environments.
That is probably a better idea anyway.

Regards,
Yitz