Breaks the loop caused by PprAbsC needing to
see big swathes of ClosureInfo.

Also from CLabel needing a couple of CgRetConv things.

Also from HeapOffs needing some MachMisc things.

\begin{code}
interface AbsCLoop where
import PreludeStdIO	( Maybe )

import CgRetConv	( ctrlReturnConvAlg,
			  CtrlReturnConvention(..)
			)
import ClosureInfo	( closureKind, closureLabelFromCI,
			  closureNonHdrSize, closurePtrsSize,
			  closureSMRep, closureSemiTag,
			  closureSizeWithoutFixedHdr,
			  closureTypeDescr, closureUpdReqd,
			  infoTableLabelFromCI, maybeSelectorInfo,
			  entryLabelFromCI,fastLabelFromCI,
			  ClosureInfo
			)
import CLabel		( CLabel )
import HeapOffs		( HeapOffset )
import Id		( Id(..) )
import MachMisc		( fixedHdrSizeInWords, varHdrSizeInWords )
import SMRep		( SMRep )
import TyCon		( TyCon )

closureKind :: ClosureInfo -> [Char]
closureLabelFromCI :: ClosureInfo -> CLabel
closureNonHdrSize :: ClosureInfo -> Int
closurePtrsSize :: ClosureInfo -> Int
closureSMRep :: ClosureInfo -> SMRep
closureSemiTag :: ClosureInfo -> Int
closureSizeWithoutFixedHdr :: ClosureInfo -> HeapOffset
closureTypeDescr :: ClosureInfo -> [Char]
closureUpdReqd :: ClosureInfo -> Bool
entryLabelFromCI :: ClosureInfo -> CLabel
fastLabelFromCI :: ClosureInfo -> CLabel
infoTableLabelFromCI :: ClosureInfo -> CLabel
maybeSelectorInfo :: ClosureInfo -> Maybe (Id, Int)

ctrlReturnConvAlg :: TyCon -> CtrlReturnConvention
data CtrlReturnConvention   = VectoredReturn Int | UnvectoredReturn Int

fixedHdrSizeInWords :: Int
varHdrSizeInWords   :: SMRep -> Int
\end{code}