Add .xz additional to .bz2 which gets replaced more and more by xz

[stoecker]

It seems there is and Java library for .xz support

​https://tukaani.org/xz/java.html

[Don-vip]

It's already in Commons Compress, shouldn't be too difficult to add.

[stoecker]

In 13350/josm:

see #15816 - add XZ support

[stoecker]

Commons uses the tukaani classes as well.

There are a couple of warnings in tukaani. Can you have a look and maybe also if you find other necessary changes? I could load and store a xz.gpx file.

[stoecker]

In 13351/josm:

see #15816 - add XZ support (commons LZMA not needed)

[Don-vip]

Ah you beat me to it, I was coding the same thing :) I'm currently reworking OsmServerReader methods to take a Compression parameter instead of the several methods parse*Zip(), parse*BZip2(), etc.

[Don-vip]

In 13352/josm:

fix #15816 - full XZ support

[Don-vip]

In 13353/josm:

see #15816 - remove unneeded classes

[Don-vip]

In 13865/josm:

see #15816 - ignore XZ classes in spotbugs analysis