Major changes, including Brotli and Lizard

- update of zstd-mt library
- add brotli v0.6.0
- add lizard v2.0
- xxhash is from zstd for lz4, lz5 and lizard now
- update also the documentation, where needed

package.cmd

@@ -7,9 +7,9 @@ SET COPYCMD=/Y /B
 SET TSERVER=http://timestamp.globalsign.com/?signature=sha2
 
 cd %ROOT%
-rd /S /Q "x32"
-rd /S /Q "x64"
-rd /S /Q "codecs"
+rd /S /Q "x32" >NUL
+rd /S /Q "x64" >NUL
+rd /S /Q "codecs" >NUL
 7z x C:\tmp\x32.zip
 7z x C:\tmp\x64.zip
 7z x C:\tmp\codecs.zip
@@ -18,13 +18,13 @@ FOR %%f IN (7-zip.dll 7z.dll 7z.exe 7za.dll 7za.exe 7zG.exe 7zFM.exe 7z.sfx 7zCo
   copy bin32\%%f x32\%%f
   copy bin64\%%f x64\%%f
 )
-copy bin32\7-zip.dll x32\7-zip32.dll
+copy bin32\7-zip.dll x64\7-zip32.dll
 
-FOR %%f IN (lz4 lz5 zstd) DO (
+FOR %%f IN (brotli lizard lz4 lz5 zstd) DO (
   copy bin32\%%f-x32.dll codecs\%%f-x32.dll
   copy bin64\%%f-x64.dll codecs\%%f-x64.dll
 )
-del 32.7z 64.7z codecs.7z
+del 32.7z 64.7z codecs.7z 7z1700-zstd-x32.exe 7z1700-zstd-x64.exe >NUL
 
 signtool.exe sign /v /fd SHA256 /tr %TSERVER% /td sha256 x32\*.exe x32\*.dll x64\*.exe x64\*.dll
 
@@ -40,7 +40,6 @@ cd ..
 
 copy bin32\Install-x32.exe + 32.7z 7z1700-zstd-x32.exe
 copy bin64\Install-x64.exe + 64.7z 7z1700-zstd-x64.exe
-del 32.7z 64.7z
 
 signtool.exe sign /v /fd SHA256 /tr %TSERVER% /td sha256 7z1700-zstd-*.exe
 cd %wd%