Log message:
Update gtar to 1.28. Add a Makefile.common and use it.
Use official man page, now that there is one.
version 1.28, 2014-07-28
* New checkpoint action: totals
The --checkpoint-action=totals option instructs tar to output the
total number of bytes transferred at each checkpoint.
* Extended checkpoint format specification.
New conversion specifiers are implemented. Some of them take
optional arguments, supplied in curly braces between the percent
sign and the specifier letter.
%d - Number of seconds since tar started.
%{r,w,d}T - I/O totals; optional arguments supply prefixes
to be used before number of bytes read, written and
deleted, correspondingly.
%{FMT}t - Current local time using FMT as strftime(3) format.
If {FMT} is omitted, use %c.
%{N}* - Pad output with spaces to the Nth column, or to the
current screen width, if {N} is not given.
%c - A shortcut for "%{%Y-%m-%d %H:%M:%S}t: %ds, \
%{read,wrote}T%*\r"
* New option --one-top-level
The option --one-top-level tells tar to extract all files into a
subdirectory named by the base name of the archive (minus standard
compression suffixes recognizable by --auto-compress). When used with
an argument, as in --one-top-level=DIR, the files are extracted into the
supplied DIRectory. This ensures that no archive members are
extracted outside of the specified directory, even if the archive is
crafted so as to put them elsewhere.
* New option --sort
The --sort=ORDER option instructs tar to sort directory entries
according to ORDER. It takes effect when creating archives.
Available ORDERs are: none (the default), name and inode. The
latter may be absent, if the underlying system does not provide
the necessary information.
Using --sort=name ensures the member ordering in the created archive
is uniform and reproducible. Using --sort=inode reduces the number
of disk seeks made when creating the archive and thus can considerably
speed up archivation.
* New exclusion options
--exclude-ignore=FILE Before dumping a directory check if it
contains FILE, and if so read exclude
patterns for this directory from FILE.
--exclude-ignore-recursive=FILE
Same as above, but the exclusion patterns
read from FILE remain in effect for any
subdirectory, recursively.
--exclude-vcs-ignores Read exclude tags from VCS ignore files,
where such files exist. Supported VCS's
are: CVS, Git, Bazaar, Mercurial.
* Tar refuses to read input from and write output to a tty device.
* Manpages
This release includes official tar(1) and rmt(8) manpages.
Distribution maintainers are kindly asked to use these instead of the
home-made pages they have been providing so far.
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