Our releases are normally built with GNU tar, which seems to default to
--format=tar. I wonder if we should switch to --format=pax. The pax
format was defined by POSIX.1 10 years ago, and should be widely
supported at this point. GNU tar can generate it and recognize it.
That might permit us to remove this paragraph from install.texi:
@item GNU tar version 1.14 (or later)
Necessary (only on some platforms) to untar the source code. Many
systems' @command{tar} programs will also work, only try GNU
@command{tar} if you have problems.
Ian
