patch applied (ghc): Taught :breakpoint add to guess the module name if not given

[Pepe Iborra]

Fri Feb 16 11:38:10 PST 2007  Pepe Iborra <mnislaih at gmail.com>
  * Taught :breakpoint add to guess the module name if not given
  
  Now the user can say 
  
  > :break add 13
  
  at the ghci prompt and the debugger will use the first top level module as the target for the breakpoint
  

    M ./compiler/ghci/Debugger.hs -14 +19
    M ./compiler/ghci/InteractiveUI.hs -1 +1