As we no longer use function pointers for read in common archiving code

archive_xread can be replaced with bb_full_read, and archive_copy_file
with bb_copyfd*
bb_copyfd is split into two functions bb_copyfd_size and bb_copyfd_eof,
they share a common backend.

libbb/print_file.c

@@ -28,7 +28,7 @@ extern void bb_xprint_and_close_file(FILE *file)
 	bb_xfflush_stdout();
 	/* Note: Do not use STDOUT_FILENO here, as this is a lib routine
 	 *       and the calling code may have reassigned stdout. */
-	if (bb_copyfd(fileno(file), fileno(stdout), 0) == -1) {
+	if (bb_copyfd_eof(fileno(file), fileno(stdout)) == -1) {
 		/* bb_copyfd outputs any needed messages, so just die. */
 		exit(bb_default_error_retval);
 	}