patch applied (ghc): Update the users guide to point at the in-tree core.ps.gz

[Ian Lynagh]

Sat Sep  6 07:02:43 PDT 2008  Ian Lynagh <igloo at earth.li>
  * Update the users guide to point at the in-tree core.ps.gz
  It used to point to a file on haskell.org, which didn't necessarily
  describe the right version of core.

    M ./docs/users_guide/using.xml -1 +1

View patch online:
http://darcs.haskell.org/ghc/_darcs/patches/20080906140243-3fd76-1452d482d7966d196def3a4933aec6984f47bfcd.gz