[RFA Darwin]: Use bfd_mach_o_lookup_command to get interpreter

[Joel Brobecker]

Hi Tristan,

> 2009-07-06  Tristan Gingold  <gingold@adacore.com>
> 
> 	* solib-darwin.c (find_program_interpreter): Simplify the code by
> 	looking up for the load_dylinker command instead of reading the
> 	corresponding (but deprecated) section.
> 	(darwin_solib_create_inferior_hook): Adjust: do not free the
> 	interpreter path.

That looks great. Go ahead and commit.

Thanks,
-- 
Joel