diff -r ea891871f481 -r bb5522e88ab2 misc/libphysfs/lzma/history.txt
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+++ b/misc/libphysfs/lzma/history.txt	Mon Apr 10 12:06:43 2017 -0400
@@ -0,0 +1,198 @@
+HISTORY of the LZMA SDK
+-----------------------
+
+  4.57           2007-12-12
+  -------------------------
+    - Speed optimizations in Ñ++ LZMA Decoder. 
+    - Small changes for more compatibility with some C/C++ compilers.
+
+  
+  4.49 beta      2007-07-05
+  -------------------------
+    - .7z ANSI-C Decoder:
+         - now it supports BCJ and BCJ2 filters
+         - now it supports files larger than 4 GB.
+         - now it supports "Last Write Time" field for files.
+    - C++ code for .7z archives compressing/decompressing from 7-zip 
+      was included to LZMA SDK.
+      
+
+  4.43           2006-06-04
+  -------------------------
+    - Small changes for more compatibility with some C/C++ compilers.
+      
+
+  4.42           2006-05-15
+  -------------------------
+    - Small changes in .h files in ANSI-C version.
+      
+
+  4.39 beta      2006-04-14
+  -------------------------
+    - Bug in versions 4.33b:4.38b was fixed:
+      C++ version of LZMA encoder could not correctly compress 
+      files larger than 2 GB with HC4 match finder (-mfhc4).
+      
+
+  4.37 beta      2005-04-06
+  -------------------------
+    - Fixes in C++ code: code could no be compiled if _NO_EXCEPTIONS was defined. 
+
+  
+  4.35 beta      2005-03-02
+  -------------------------
+    - Bug was fixed in C++ version of LZMA Decoder:
+       If encoded stream was corrupted, decoder could access memory 
+       outside of allocated range.
+
+  
+  4.34 beta      2006-02-27
+  -------------------------
+    - Compressing speed and memory requirements for compressing were increased
+    - LZMA now can use only these match finders: HC4, BT2, BT3, BT4
+
+  
+  4.32           2005-12-09
+  -------------------------
+    - Java version of LZMA SDK was included
+
+
+  4.30           2005-11-20
+  -------------------------
+    - Compression ratio was improved in -a2 mode
+    - Speed optimizations for compressing in -a2 mode
+    - -fb switch now supports values up to 273
+    - Bug in 7z_C (7zIn.c) was fixed:
+      It used Alloc/Free functions from different memory pools.
+      So if program used two memory pools, it worked incorrectly.
+    - 7z_C: .7z format supporting was improved
+    - LZMA# SDK (C#.NET version) was included
+
+
+  4.27 (Updated) 2005-09-21
+  -------------------------
+   - Some GUIDs/interfaces in C++ were changed.
+     IStream.h:
+       ISequentialInStream::Read now works as old ReadPart
+       ISequentialOutStream::Write now works as old WritePart
+
+  
+  4.27           2005-08-07
+  -------------------------
+    - Bug in LzmaDecodeSize.c was fixed:
+       if _LZMA_IN_CB and _LZMA_OUT_READ were defined,
+       decompressing worked incorrectly.
+
+
+  4.26           2005-08-05
+  -------------------------
+    - Fixes in 7z_C code and LzmaTest.c:
+      previous versions could work incorrectly,
+      if malloc(0) returns 0
+
+
+  4.23           2005-06-29
+  -------------------------
+    - Small fixes in C++ code
+
+
+  4.22           2005-06-10
+  -------------------------
+    - Small fixes
+
+
+  4.21           2005-06-08
+  -------------------------
+    - Interfaces for ANSI-C LZMA Decoder (LzmaDecode.c) were changed
+    - New additional version of ANSI-C LZMA Decoder with zlib-like interface:
+        - LzmaStateDecode.h
+        - LzmaStateDecode.c
+        - LzmaStateTest.c
+    - ANSI-C LZMA Decoder now can decompress files larger than 4 GB
+
+  
+  4.17           2005-04-18
+  -------------------------
+    - New example for RAM->RAM compressing/decompressing: 
+      LZMA + BCJ (filter for x86 code):
+        - LzmaRam.h
+        - LzmaRam.cpp
+        - LzmaRamDecode.h
+        - LzmaRamDecode.c
+        - -f86 switch for lzma.exe
+
+  
+  4.16           2005-03-29
+  -------------------------
+    - Bug was fixed in LzmaDecode.c (ANSI-C LZMA Decoder): 
+       If _LZMA_OUT_READ was defined, and if encoded stream was corrupted,
+       decoder could access memory outside of allocated range.
+    - Speed optimization of ANSI-C LZMA Decoder (now it's about 20% faster).
+      Old version of LZMA Decoder now is in file LzmaDecodeSize.c. 
+      LzmaDecodeSize.c can provide slightly smaller code than LzmaDecode.c
+    - Small speed optimization in LZMA C++ code
+    - filter for SPARC's code was added
+    - Simplified version of .7z ANSI-C Decoder was included
+
+
+  4.06           2004-09-05
+  -------------------------
+    - Bug in v4.05 was fixed:
+        LZMA-Encoder didn't release output stream in some cases.
+
+
+  4.05           2004-08-25
+  -------------------------
+    - Source code of filters for x86, IA-64, ARM, ARM-Thumb 
+      and PowerPC code was included to SDK
+    - Some internal minor changes
+
+
+  4.04           2004-07-28
+  -------------------------
+    - More compatibility with some C++ compilers
+
+
+  4.03           2004-06-18
+  -------------------------
+    - "Benchmark" command was added. It measures compressing 
+      and decompressing speed and shows rating values. 
+      Also it checks hardware errors.
+
+
+  4.02           2004-06-10
+  -------------------------
+    - C++ LZMA Encoder/Decoder code now is more portable
+      and it can be compiled by GCC on Linux.
+
+
+  4.01           2004-02-15
+  -------------------------
+    - Some detection of data corruption was enabled.
+        LzmaDecode.c / RangeDecoderReadByte
+        .....
+        {
+          rd->ExtraBytes = 1;
+          return 0xFF;
+        }
+
+
+  4.00           2004-02-13
+  -------------------------
+    - Original version of LZMA SDK
+
+
+
+HISTORY of the LZMA
+-------------------
+  2001-2007:  Improvements to LZMA compressing/decompressing code, 
+              keeping compatibility with original LZMA format
+  1996-2001:  Development of LZMA compression format
+
+  Some milestones:
+
+  2001-08-30: LZMA compression was added to 7-Zip
+  1999-01-02: First version of 7-Zip was released
+  
+
+End of document