xnLZ - parallel lzma with entropy scan intended as 64bit 4x4:lzma replacement

[elit]

This is xnlz with lzma:pb4 (and lzma:lc8 like previous release). This tend to give slightly better compression in games(0.5-2%) from what I have seen. However, this and last release are not compatible, keep that in mind. I plan to stick with this setup, therefore its better to release now than later when people adopt it for too long.
Sources are same only change was "pos_state_bits" param located in LZ dir in xnlz.h file. You can also test it and let me know if it improved ratio for you.

xnlz-pb4-fix.zip