This is a test "canonical source" directory that will contain the
libpng public-release archives with canonical names.  There is a
separate subdirectory for each archiving method (gz, xz, zip, and
7z).

Only gz/*.tar.gz, xz/*.tar.xz, zip/*.zip, and 7z/*.7z files are
present.  New .zip archives were created if they did not already
exist for the older versions.  The .zip archives each now contain
a directory whose name is of the form lpngXY or lpngXYZ, as almost
all did already.  New .tar.xz and .7z archives were created for all
releases.

There is no separate "history" directory as in
ftp://ftp.simplesystems.org/pub/png/src.

The tar.gz and tar.xz archives use NEWLINE to mark end-of-line
internally, while the .zip and .7z archives use CRLF.

There are no changes to the contents of the previous files, but
some of the base names are changed to a canonical form.

Changes from the previous base names:
   libpng-0.71  -> libpng-0.71.0 libpng-0.81  -> libpng-0.81.0
   libpng-0.82  -> libpng-0.82.0 libpng-0.85  -> libpng-0.85.0
   libpng-0.86  -> libpng-0.86.0 libpng-0.87  -> libpng-0.87.0
   libpng-0.88  -> libpng-0.88.0 libpng-0.89  -> libpng-0.89.0
   libpng-0.89c -> libpng-0.89.3 libpng-0.90  -> libpng-0.90.0
   libpng-0.95  -> libpng-0.95.0 libpng-0.96  -> libpng-0.96.0
   libpng-0.97  -> libpng-0.97.0 libpng-0.98  -> libpng-0.98.0
   libpng-0.99  -> libpng-0.99.0 libpng-1.0.16-config -> libpng-1.0.16
   libpng-1.0.17-config -> libpng-1.0.17 libpng-1.0.18-config ->
   libpng-1.0.18 libpng-1.2.6-config -> libpng-1.2.6 libpng-1.2.7-config
   -> libpng-1.2.7 libpng-1.2.8-config -> libpng-1.2.8 lpng89c.zip
   -> libpng-0.89.3.zip All lpngXY.zip -> libpng-X.Y.0.zip All
   lpngXYZ.zip -> libpng-X.Y.Z.zip libpng-1.00 was removed; it was
   the same as
     libpng-1.0.0 except for the version number and lacking one of
     the makefiles.

Timestamps on the gz, 7z, and xz archives were copied from the zip
archives, whose timestamps were correct.  NOTE: sftp's "put -P"
does not work at SourceForge, so the timestamps were lost in the
SourceForge File Release System.  It's possible to restore them
(see tools/touches.sh which works fine).  I ran touch.sh on the
tarballs at SourceForge.

If you look at the files via sftp or ssh, the timestamps are correct.
However, the FRS seems to use its own timestamping system, so when
you browse the files, FRS reports the time of the touch operation
instead of the timestamp on the file.  Also, the download history of
each file was discarded when I touched it!

Foiled again.

Only the tar.gz and tar.xz archives contain the "config" scripts.
The older ones (prior to libpng-1.0.16 and 1.2.6) do not have these.

If you have comments about this "canonical" libpng source set or about
the accompanying GIT repository, send them to
png-mng-implement at lists.sourceforge.net (you have to subscribe
to the list before posting) or to glennrp at users.sourceforge.net