qualified + hiding hides too much

[ross]

Given the following modules:

module A where
f = 1
g = 2

module B where
import qualified A hiding (f)
h = A.g

Hugs fails with

ERROR "B.hs":3 - Undefined qualified variable "A.g"

(reported by Iavor Diatchki)

This affects variables, but not types or data constructors.

[ross]

fixed in CVS