patch applied (ghc-6.8/ghc): MERGED: FIX #1748: -main-is wasn't handling the case of a single hierarchical module

[Ian Lynagh]

Fri Oct 12 07:37:57 PDT 2007  Ian Lynagh <igloo at earth.li>
  * MERGED: FIX #1748: -main-is wasn't handling the case of a single hierarchical module
  Simon Marlow <simonmar at microsoft.com>**20071008131305
   test case is driver062.5

    M ./compiler/main/DynFlags.hs -5 +6