Update mar_compression for 8.0.1 release
Following legacy/trac#27178 (moved), we need to update mar_compression for the 8.0.1 release: xz for 8.0.1, bzip2 for 8.0.
Following legacy/trac#27178 (moved), we need to update mar_compression for the 8.0.1 release: xz for 8.0.1, bzip2 for 8.0.