patch applied (ghc): Tweak the mangler; fixes trac #2871

[Ian Lynagh]

Wed Feb 11 07:03:40 PST 2009  Ian Lynagh <igloo at earth.li>
  * Tweak the mangler; fixes trac #2871
  It was getting confused by lines like:
   # 9 "C:\Temp\/ghc620_0/ghc620_0.hc" 1

    M ./driver/mangler/ghc-asm.lprl -1 +1

View patch online:
http://darcs.haskell.org/ghc/_darcs/patches/20090211150340-3fd76-0e264473b2d88fa268b4df40208405c1b1be0527.gz