[patch ld]: Fix duplicates in export-table due missing set of is_ident.

[nick clifton]

Hi Kai,

> 2012-02-13  Kai Tietz  <ktietz@redhat.com>
>
> 	* deffilep.y (find_export_in_list): Set is_indent for
> 	first or last element, if identical.
> 	(find_import_in_list): Likewise.

Approved - please apply.

Cheers
   Nick