Changes in version 1.13:

Lziprecover has been moved to its own package.

Inability to change output file attributes has been downgraded from
error to warning.

Compression time of option "-0" has been reduced by 2%.

A reorganization of the compression code has been made.

A small change has been made in the "--help" output and man page.

Quote characters in messages have been changed as advised by GNU Coding
Standards.

Configure option "--datadir" has been renamed to "--datarootdir" to
follow GNU Standards.
