patch applied (cabal-branches/cabal-1.10): "Refactor to avoid problems when $HOME is not set"

[Ian Lynagh]

Sun Apr 17 08:41:35 PDT 2011  Ian Lynagh <igloo at earth.li>
  * Refactor to avoid problems when $HOME is not set
  We now avoid calling getWindowsProgramFilesDir and
  getAppUserDataDirectory when we don't need to know their results.
  This means that a GHC build goes through when $HOME is unset
  (GHC trac #5047).

    M ./Distribution/Simple/InstallDirs.hs -13 +15

View patch online:
http://darcs.haskell.org/cgi-bin/darcsweb.cgi?r=cabal-branches/cabal-1.10;a=darcs_commitdiff;h=20110417154135-3fd76-83c3c4104681e998be85741001eaa7f281ba9648.gz