patch applied (ghc): Several changes to the code dealing with newtypes in :print

[Pepe Iborra]

Sun Jun 17 12:34:35 PDT 2007  Pepe Iborra <mnislaih at gmail.com>
  * Several changes to the code dealing with newtypes in :print
  
  I simplified the code, killed some unreachable blocks, and renamed it so that it corresponds more accurately with what is explained in the technical report
  
  http://www.dsic.upv.es/docs/bib-dig/informes/etd-04042007-111431/papernew2.pdf
  
  Also, fixed a bug related to newtypes in the pretty printer 
  

    M ./compiler/ghci/RtClosureInspect.hs -80 +73