Switch from zbuff to stream interface

- using the recommended buffersizes from zstd lib
- compile also an codec dll with support for legacy versions

CPP/7zip/Bundles/Codec_zstdF/StdAfx.cpp

@@ -0,0 +1,3 @@
+// StdAfx.cpp
+
+#include "StdAfx.h"

CPP/7zip/Bundles/Codec_zstdF/StdAfx.h

@@ -0,0 +1,8 @@
+// StdAfx.h
+
+#ifndef __STDAFX_H
+#define __STDAFX_H
+
+#include "../../../Common/Common.h"
+
+#endif

CPP/7zip/Bundles/Codec_zstdF/makefile

@@ -0,0 +1,24 @@
+PROG = zstd.dll
+DEF_FILE = ../../Compress/Codec.def
+CFLAGS = $(CFLAGS) -DZSTD_LEGACY_SUPPORT
+
+7ZIP_COMMON_OBJS = \
+  $O\StreamUtils.obj \
+
+COMPRESS_OBJS = \
+  $O\CodecExports.obj \
+  $O\DllExportsCompress.obj \
+
+C_OBJS = \
+  $O\Alloc.obj \
+
+!include "../../zstd.mak"
+ZSTD_OBJS = $(ZSTD_OBJS) \
+  $O\fse_compress.obj \
+  $O\huf_compress.obj \
+  $O\zstd_compress.obj \
+  $O\zstd_v05.obj \
+  $O\zstd_v06.obj \
+  $O\zstd_v07.obj \
+
+!include "../../7zip.mak"

CPP/7zip/Bundles/Codec_zstdF/resource.rc

@@ -0,0 +1,5 @@
+#include "../../MyVersionInfo.rc"
+
+MY_VERSION_INFO_DLL("7z ZStandard Plugin", "zstd")
+
+101  ICON  "../../Archive/Icons/7z.ico"