register_archiver  441 archive-tar.c  	register_archiver(&tar_archiver);
register_archiver  451 archive-tar.c  			register_archiver(tar_filters[i]);
register_archiver  584 archive-zip.c  	register_archiver(&zip_archiver);
register_archiver   28 archive.h      extern void register_archiver(struct archiver *);