Merge branch 'upstream-diy2' into FixAndroidBuild

# By Diy2 Upstream
* upstream-diy2:
  diy2 2021-07-21 (e47b2b29)

ThirdParty/diy2/vtkdiy2/include/vtkdiy2/io/utils.hpp

@@ -115,7 +115,7 @@ namespace utils
     s_template[filename.size()] = 0;
 
     int handle = -1;
-#if defined(__MACH__)
+#if defined(__MACH__) || defined(__ANDROID_API__)
     // TODO: figure out how to open with O_SYNC
     handle = ::mkstemp(s_template.get());
 #else