patch applied (ghc-6.12/ghc): Remove duplicate "./configure --help" output; fixes #4075

[Ian Lynagh]

Sun May 16 07:12:06 PDT 2010  Ian Lynagh <igloo at earth.li>
  * Remove duplicate "./configure --help" output; fixes #4075

    M ./configure.ac -10 +2

View patch online:
http://darcs.haskell.org/cgi-bin/darcsweb.cgi?r=ghc-6.12/ghc;a=darcs_commitdiff;h=20100516141206-3fd76-7034038ae8965d916fd0c4a6ebe64a52e9d6c565.gz