(create_archive): Check for excluded names when doing incremental
pass through directory.
(dump_file): Do not dump old files explicitly given on command line
when using --listed-incremental. Do not strip ./ from front of file names.
Don't assume years fit into four digits.
Don't append trailing newline.
(print_header): Report ??? if localtime returns null;
Don't assume years fit into four digits.
New -y or --bzip2 option.
(add_filtered_exclude): New function.
(decode_options): Put excluded patterns with / into excluded_with_slash,
and without / into excluded_without_slash.
Compare newer_mtime_option to its new initial value TYPE_MINIMUM (time_t)
when deciding whether more than one threshold date was specified.
(base_8_digits): New macro.
(MAX_VAL_WITH_DIGITS): New macro.
(to_base): Renamed from to_oct. Support base 64 too.
New parameters specifying bits per digit and digits.
Remove `type' parameter. The result is now undefined if it doesn't fit;
it's the caller's responsibility to check this.
(to_chars): Other half of old to_oct, for 64-bit support.
Mostly a new function.
(GID_NOBODY, UID_NOBODY): Don't define if the headers don't.
(gid_substitute, uid_substitute): Look up names dynamically if
GID_NOBODY and UID_NOBODY aren't defined; use -2 if all else fails.
(mode_to_chars): Renamed from mode_to_oct.
Support negative values in all the _to_chars functions.
(start_header): Use FILESYSTEM_PREFIX_LEN instead of MSDOS ifdef.
Abort if archive format is DEFAULT_FORMAT when it shouldn't be.
(dump_file): Inspect entire pathname, not just new file name
component, when deciding whether to exclude it.
(<fnmatch.h>): Include unconditionally.
(child_open_for_compress): Dup after closing, to avoid possible file
descriptor exhaustion.
(flush_write): Use FILESYSTEM_PREFIX_LEN instead of MSDOS ifdef.
(flush_read): Likewise.
(from_chars): Renamed from from_oct. New parameter specifing
the negative of the minimum allowed value. Support negative
and base-64 values.
(base64_map): New var.
(base64_init): New function.
(print_header): Output numeric uids and gids if numeric_owner_option.
(unlink_destination): New function, which checks for unlink failures.
(maybe_recoverable): Stay quiet if -U.
(extract_archive): Use O_EXCL if unlink_first_option.
Report unlink failures.
Use HAVE_SYMLINK, not S_ISLNK, to determine whether symlink exists.
Use HAVE_MKFIFO || defined mkfifo, not S_ISFIFO, to determine whether
mkfifo exists.
negative timestamps are handled correctly.
Replace invocations of xstrtol and xstrtoul with xstrtoumax, for
uniformity (and so that we don't need to have the other fns).
(main): Remove call to init_total_written; no longer needed.
permissions problems.
(open_archive): Fix wording on fatal error message.
Don't bother to stat /dev/null if the archive is not a character
special device.
