2011-04-13 Kai Tietz <ktietz@redhat.com>

2011-04-13  Kai Tietz  <ktietz@redhat.com>

	PR binutils/12658
	* deffile.h (def_file_add_export): Add is_dup argument.
	(def_file_add_import): Likewise.
	* deffilep.y (are_names_equal): New helper.
	(cmp_export_elem): New helper.
	(find_export_in_list): Add search routine for exports.
	(def_file_add_export): Check for duplicates.
	(cmp_import_elem): New helper.
	(find_import_in_list): Add search routine for imports.
	(def_file_add_import): Check for duplicates.
	(def_exports): Handle duplicates.
	(def_imports): Likewise.
	* pe-dll.c (process_def_file_and_drectve): Likewise.
	(pe_implied_import_dll): Likewise.