XZ Utils 4.999.8beta

XZ Utils 4.999.8beta

XZ Utils 4.999.8beta is available at
<http://tukaani.org/xz/xz-4.999.8beta.tar.gz>

The .xz file format is now stable. There are no file format changes
since 4.999.7beta, thus files created with 4.999.7beta are compatible
with future XZ Utils versions (assuming there are no catastrophical
bugs).

I said that liblzma API would be stable in 4.999.7beta, but there are
some changes in 4.999.8beta. They shouldn't affect most developers
though. If your code is affected, it won't compile, so it's easy to
notice.

There is now experimental support for building XZ Utils for Windows
using MinGW (both 32-bit and 64-bit). See windows/README for details.