patch applied (packages/readline): Pass configure opts down to ./configure, and add a nasty hack not to fail

[Ian Lynagh]

Fri Apr  6 11:24:10 PDT 2007  Ian Lynagh <igloo at earth.li>
  * Pass configure opts down to ./configure, and add a nasty hack not to fail
  If readline doesn't build then we still want to build the rest of GHC.
  For now readline simply ignores any failure when asked to build, but we
  really need to do something better here!

    M ./Setup.hs -2 +23
    M ./configure.ac -1 +10