PLXCOMP-222 LEF flag set for UTF-8 encoded names.
[PLXCOMP-178] Last modified time preservation

Patch by David Tombs, applied unmodified
Updated plexus
[maven-release-plugin] prepare release plexus-archiver-2.4.4
[maven-release-plugin] prepare for next development iteration
Converted to commons-compress ZipOutputStream
Converted tar