zstd release 0.8.0

- made an extra zstd.mak file
- removed Format7zZStd
- SFXSetup also has zstd now
- the big 7z.dll is backward compatible to: 0.5 .. 0.7
- the small 7za.dll has only support for zstd 0.8

CPP/7zip/Bundles/SFXWin/makefile

@@ -119,8 +119,6 @@ COMPRESS_OBJS = \
   $O\LzmaRegister.obj \
   $O\PpmdDecoder.obj \
   $O\PpmdRegister.obj \
-  $O\ZstdDecoder.obj \
-  $O\ZStdRegister.obj \
 
 CRYPTO_OBJS = \
   $O\7zAes.obj \
@@ -142,15 +140,8 @@ C_OBJS = \
   $O\Sha256.obj \
   $O\Threads.obj \
 
-ZSTD_OBJS = \
-  $O\entropy_common.obj \
-  $O\fse_decompress.obj \
-  $O\huf_decompress.obj \
-  $O\zbuff_decompress.obj \
-  $O\zstd_common.obj \
-  $O\zstd_decompress.obj \
-  $O\xxhash.obj \
-
 !include "../../Aes.mak"
 !include "../../Crc.mak"
+
+!include "../../zstd.mak"
 !include "../../7zip.mak"