* dwarf2read.c (struct dwp_file): Fix comment.
	(open_and_init_dwp_file): Set dwp_file->name to bfd's file name.
	symtab/15652
	* dwarf2read.c (try_open_dwop_file): New arg search_cwd.
	All callers updated.
	(open_dwp_file): If we can't find the dwp file, search the basename
	in debug-file-directory.