[PATCH] Fix 'quickstrap' target for Ada

[Dave Korn]

Eric Botcazou wrote:
> It fails if Ada front-end files are modified because GNATBIND is set to the 
> stage #1 gnatbind and the ALI files are generally not compatible.

  I'll bet this is why I had so much trouble bootstrapping my way past an ABI
change!  Thanks for fixing this, Eric.

    cheers,
      DaveK