[patch ld]: Fix def-file-parser for x64 about BASE-address scalar-width

[nick clifton]

Hi Kai,

> 2013-01-25  Kai Tietz
>
>          * deffilep.y (def_image_name): Adjust type of base-address argument.
>          (%union): Add new type bfd_vma as vma.
>          (VMA):  New rule.
>          (opt_base): Use VMA instead of NUMBER rule to evaluate value.
>          (def_file_print): Use bfd's fprintf_vma to output base-address.

Approved - please apply.

Cheers
   Nick