new version that brings xz-support. please signoff. -Andy version 1.22 - Sergey Poznyakoff, 2009-03-05 * Support for xz compression Tar uses xz for compression if one of the following conditions is met: 1. The option --xz or -J (see below) is used. 2. The xz binary is set as compressor using --use-compress-program option. 3. The file name of the archive being created ends in `.xz' and auto-compress option (-a) is used. Xz is used for decompression if one of the following conditions is met: 1. The option --xz or -J is used. 2. The xz binary is set as compressor using --use-compress-program option. 3. The file is recognized as xz compressed stream data. * Short option -J reassigned as a short equivalent of --xz * New option -I The -I option is assigned as a short equivalent for --use-compress-program. * The --no-recursive option works in incremental mode.