re PR debug/9963 ([CygWin] g++ -gcoff report "C_EFCN symbol out of scope")

re PR debug/9963 ([CygWin] g++ -gcoff report "C_EFCN symbol out of scope")

	PR debug/9963
	* config/i386/cygming.h (ASM_OUTPUT_EXTERNAL): Pass DECL to
	i386_pe_record_external_function.
	(i386_pe_record_external_function): Update declaration.
	* config/i386/winnt.c (struct extern_list): Add decl field.
	(i386_pe_record_external_function): Add decl parameter.
	(i386_pe_file_end): Check TREE_ASM_WRITTEN on decl, not
	identifier.
	* config/i386/i386-protos.h (i386_pe_record_external_function):
	Update declaration.

From-SVN: r97602