merge multi threading to master branch

- updated zstd to latest devel release
- lz4, lz5 and zstd is included now
- all three support threading

CPP/7zip/Bundles/Format7z/makefile

@@ -136,10 +136,28 @@ C_OBJS = \
 
 !include "../../Aes.mak"
 !include "../../Crc.mak"
-!include "../../zstd.mak"
-ZSTD_OBJS = $(ZSTD_OBJS) \
+
+COMPRESS_OBJS = $(COMPRESS_OBJS) \
+  $O\ZstdDecoder.obj \
+  $O\ZstdEncoder.obj \
+  $O\ZstdRegister.obj \
+
+ZSTD_OBJS = \
+  $O\entropy_common.obj \
+  $O\fse_decompress.obj \
+  $O\huf_decompress.obj \
+  $O\zstd_common.obj \
+  $O\zstd_decompress.obj \
+  $O\xxhash.obj \
   $O\fse_compress.obj \
   $O\huf_compress.obj \
   $O\zstd_compress.obj \
+  $O\error_private.obj \
+
+ZSTDMT_OBJS = \
+  $O\threading.obj \
+  $O\zstdmt_common.obj \
+  $O\zstdmt_compress.obj \
+  $O\zstdmt_decompress.obj \
 
 !include "../../7zip.mak"