The script is copied as is from gnulib.

[kzak@redhat.com: - generate .tarball-version and .version files in
                    top level Makefile.am
                  - delete autom4te.cache in autogen.sh]

Signed-off-by: Sami Kerola <kerolasa@iki.fi>
Signed-off-by: Karel Zak <kzak@redhat.com>