test: Add _win32_seterrormode.fail.cpp to silence Exception diaalogs on Windows desktop.

test/_win32_seterrormode.fail.cpp

@@ -0,0 +1,15 @@
+#include <windows.h>
+
+namespace {
+
+  class Win32ctor {
+  public:
+    Win32ctor() {
+      SetErrorMode(SEM_FAILCRITICALERRORS |
+                   SEM_NOGPFAULTERRORBOX |
+                   SEM_NOOPENFILEERRORBOX);
+    }
+  };
+
+  static Win32ctor ctor;
+}