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

C/zstd/zstd_v06.c

@@ -36,7 +36,7 @@
 #include "zstd_v06.h"
 #include <stddef.h>    /* size_t, ptrdiff_t */
 #include <string.h>    /* memcpy */
-#include <stdlib.h>    /* malloc, free, qsort */ 
+#include <stdlib.h>    /* malloc, free, qsort */
 
 
 
@@ -535,8 +535,6 @@ ZSTDLIB_API size_t ZSTDv06_decompress_usingPreparedDCtx(
 
 
 
-struct ZSTDv06_frameParams_s { U64 frameContentSize; U32 windowLog; };
-
 #define ZSTDv06_FRAMEHEADERSIZE_MAX 13    /* for static allocation */
 static const size_t ZSTDv06_frameHeaderSize_min = 5;
 static const size_t ZSTDv06_frameHeaderSize_max = ZSTDv06_FRAMEHEADERSIZE_MAX;