Support the use of qualified names in :info, e.g.,
Support the use of qualified names in :info, e.g.,

  Main> :i Pretty.$$
  infixl 5 $$
  ($$) :: Doc -> Doc -> Doc

  Main>

The modId can refer to any of the currently loaded modules,
not just those within the scope of the current module.

FranklinChen/Hugs,FranklinChen/Hugs,FranklinChen/Hugs,FranklinChen/Hugs,FranklinChen/Hugs,FranklinChen/Hugs,FranklinChen/Hugs