Changes in version 0.6:

The new option '-A, --concatenate', which appends tar.lz archives to the
end of a tar.lz archive, has been added.

The option '--ignore-crc' has been replaced with '--missing-crc' to
improve backwards compatibility with the pax format. Missing CRCs are
now ignored by default and only reported as errors if '--missing-crc' is
specified.

Tarlz now tests that uid, gid, mtime, devmajor and devminor are in ustar
range when adding members to an archive.

The configure script now accepts appending options to CXXFLAGS using the
syntax 'CXXFLAGS+=OPTIONS'.

'make dist' now uses tarlz to create the source tarball.
