* objdump.c (include_paths, include_path_count): New vars.

	* objdump.c (include_paths, include_path_count): New vars.
	(usage): Describe --include.
	(long_options): Add "include".
	(add_include_path): New function.
	(struct print_file_list): Make filename const.  Add modname.
	(try_print_file_open, update_source_path): New functions.
	(show_line): Use them.
	(main): Handle 'I' option.  Don't check for NULL xrealloc arg.