Nicer imports

Hi, I wonder if we could have

import
  Data
    A
    B (ba, bb, bc)
    C  as C
    C1 as C1 (ca,cb,cc)
    D qualified
    E as E qualified
    F as F qualified (fa, fb, fc)
  Libs.Other

--  Data.E qualified as E -- both valid
--  Data.F qualified as F (fa, fb, fc)

to desugar to

import           Data.A
import           Data.B (ba, bb, bc)
import           Data.C as C
import qualified Data.D
import qualified Data.E as E
import qualified Data.F as F (fa, fb, fc)
import Libs.Other

so we could make syntax more dry? What it does if there is indentation it uses previous levels as prefix

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Trac field	Value
Version	7.11
Type	FeatureRequest
TypeOfFailure	OtherFailure
Priority	lowest
Resolution	Unresolved
Component	Compiler (Parser)
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