Log Message:
lzma: update to version 9.18

Changelog:

9.18 beta      2010-11-02
-------------------------
- New small SFX module for installers (SfxSetup).

9.12 beta      2010-03-24
-------------------------
- The BUG in LZMA SDK 9.* was fixed: LZMA2 codec didn't work,
  if more than 10 threads were used (or more than 20 threads in some modes).

9.11 beta      2010-03-15
-------------------------
- PPMd compression method support

9.09           2009-12-12
-------------------------
- The bug was fixed:
   Utf16_To_Utf8 funstions in UTFConvert.cpp and 7zMain.c
   incorrectly converted surrogate characters (the code >= 0x10000) to UTF-8.
- Some bugs were fixed

9.06           2009-08-17
-------------------------
- Some changes in ANSI-C 7z Decoder interfaces.

9.04           2009-05-30
-------------------------
- LZMA2 compression method support
- xz format support