Update to 7-Zip 17.01 Beta from Igor Pavlov

- Minor speed optimization for LZMA2 (xz and 7z) multi-threading compression.
  7-Zip now uses additional memory buffers for multi-block LZMA2 compression.
  CPU utilization was slightly improved.
- 7-zip now creates multi-block xz archives by default. Block size can be
  specified with -ms[Size]{m|g} switch.
- xz decoder now can unpack random block from multi-block xz archives.  7-Zip
  File Manager now can open nested multi-block xz archives (for example,
  image.iso.xz) without full unpacking of xz archive.
- 7-Zip now can create zip archives from stdin to stdout.
- 7-Zip command line: @listfile now doesn't work after -- switch.  Use
  -i@listfile before -- switch instead.

fixed bugs:
- 7-Zip could add unrequired alternate file streams to WIM archives, for
  commands that contain filename wildcards and -sns switch.
- 7-Zip 17.00 beta crashed for commands that write anti-item to 7z archive.
- 7-Zip 17.00 beta ignored "Use large memory pages" option.

CPP/7zip/UI/FileManager/PanelCopy.cpp

@@ -101,7 +101,7 @@ HRESULT CPanel::CopyTo(CCopyToOptions &options, const CRecordVector<UInt32> &ind
   {
     UString errorMessage = LangString(IDS_OPERATION_IS_NOT_SUPPORTED);
     if (options.showErrorMessages)
-      MessageBox(errorMessage);
+      MessageBox_Error(errorMessage);
     else if (messages != 0)
       messages->Add(errorMessage);
     return E_FAIL;
@@ -307,7 +307,7 @@ HRESULT CPanel::CopyFrom(bool moveMode, const UString &folderPrefix, const UStri
   {
     UString errorMessage = LangString(IDS_OPERATION_IS_NOT_SUPPORTED);
     if (showErrorMessages)
-      MessageBox(errorMessage);
+      MessageBox_Error(errorMessage);
     else if (messages != 0)
       messages->Add(errorMessage);
     return E_ABORT;
@@ -334,7 +334,7 @@ void CPanel::CopyFromNoAsk(const UStringVector &filePaths)
     // For Password:
     SetFocusToList();
     if (result != E_ABORT)
-      MessageBoxError(result);
+      MessageBox_Error_HRESULT(result);
     return;
   }