patch applied (ghc-6.8/ghc): MERGED: FIX #1838, #1987: change where GHCi searches for config files

[Ian Lynagh]

Thu Feb  7 09:52:58 PST 2008  Ian Lynagh <igloo at earth.li>
  * MERGED: FIX #1838, #1987: change where GHCi searches for config files
  Simon Marlow <simonmar at microsoft.com>**20080123143207
   
   6.6 behaviour:
     - ./.ghci
     - $HOME/.ghci
   
   6.8.[12] behaviour:
     - ./.ghci
     - Windows: c:/Documents and Settings/<user>/.ghci
     - Unix: $HOME/.ghci
   
   6.10 (and 6.8.3 when this is merged):
     - ./.ghci
     - Windows: c:/Documents and Settings/<user>/Application Data/ghc/ghci.conf
     - Unix: $HOME/.ghc/ghci.conf
     - $HOME/.ghci
   
   We will need to document this in the 6.8.3 release notes because it
   may affect Windows users who have adapted their setup to 6.8.[12].

    M ./compiler/ghci/InteractiveUI.hs -27 +34
    M ./docs/users_guide/ghci.xml -19 +35