patch applied (ghc): Don't overwrite the *OPTS/*Opts variables in mk/validate-settings.mk

[Ian Lynagh]

Thu May 21 07:19:38 PDT 2009  Ian Lynagh <igloo at earth.li>
  * Don't overwrite the *OPTS/*Opts variables in mk/validate-settings.mk
  Overwriting means we lose the -m64 on OS X 64.

    M ./mk/validate-settings.mk -5 +5

View patch online:
http://darcs.haskell.org/ghc/_darcs/patches/20090521141938-3fd76-81c6224717e4af9daea76311e1de2079253f0ec6.gz