[cvs-nhc98] patch applied (hat): Accept `Prelude.-> ' as a valid type constructor in instance declarations.

[Malcolm Wallace]

Thu Nov  8 06:49:31 PST 2001  malcolm
  * Accept `Prelude.->' as a valid type constructor in instance declarations.

    M ./src/compiler98/Parse2.hs +2
    M ./src/compiler98/ParseLex.hs -3 +4