lrzip-0.22 file header format
January 2008
Peter Hyman, pete@peterhyman.com

Byte	Content
0-3	LRZI
4	LRZIP Major Version Number
5	not used
6-9	Source File Size (no HAVE_LARGE_FILES)
6-14	Source File Size
16	LZMA Compression Level
17	LZMA Literal Context Bits
18	Literal Post State Bits	(high order bits)
18	Post State Bits		(low order bits)
19-22	not used
23-36	Stream 1 header data
37-50	Stream 2 header data
51	Compressed data type
