Add read/write support for xz (lzma) files.
Merge branch 'master' of https://github.com/isomer/libtrace into develop
Integrate lzma into libwandio properly

Update configure to detect lzma properly.
Add missing get_compression_type API function to wandio code.
Add code to detect if input file is LZMA.
Added help text to wandiocat.

Also changed indentation to match the rest of libwandio, as it
was annoying to work with otherwise :)