LZMA compression utilities.

This is the latest xz, packaged with a different name, to not conflict with rhel5 and rhel6 packages. It is multithreaded, and given enough input, will use all cpus and memory, maximizing compression and decompression performance. It replaces the system xz, but does not break packages depending on xz-libs. Note that only xz5-devel conflicts, on purpose, with xz-devel, otherwise, the other packages are updates to xz.

This is a companion discussion topic for the original entry at https://copr.fedorainfracloud.org/coprs/pcpa/xz5/