Fixed Lzma support for streams larger than 2GB, and set IsMultiThread in initialization.  Thanks to Pierre le Riche for the changes.
Fixed Lzma support for streams larger than 2GB, and set IsMultiThread in initialization.  Thanks to Pierre le Riche for the changes.

rburgstaler/tpabbrevia,rburgstaler/tpabbrevia,rburgstaler/tpabbrevia,rburgstaler/tpabbrevia,rburgstaler/tpabbrevia,rburgstaler/tpabbrevia