Test runner: Add some Win32-specific implementations

Disable error message boxes in tests, enable termination on heap
corruption, and check if running under a debugger.

test/cairo-test-runner.c

@@ -49,6 +49,10 @@
 #define RUNNING_ON_VALGRIND 0
 #endif
 
+#ifdef _WIN32
+#include <windows.h>
+#endif
+
 #ifdef _MSC_VER
 #include <crtdbg.h>
 #endif
@@ -169,6 +173,8 @@ is_running_under_debugger (void)
     {
 	return TRUE;
     }
+#elif defined (_WIN32)
+    return IsDebuggerPresent () != 0;
 #endif
 
     if (RUNNING_ON_VALGRIND)
@@ -740,6 +746,14 @@ main (int argc, char **argv)
     int len;
     char *cairo_tests_env;
 
+#ifdef _WIN32
+    SetErrorMode (SEM_FAILCRITICALERRORS |
+                  SEM_NOGPFAULTERRORBOX |
+                  SEM_NOOPENFILEERRORBOX);
+
+    HeapSetInformation (NULL, HeapEnableTerminationOnCorruption, NULL, 0);
+#endif
+
 #ifdef _MSC_VER
     /* We don't want an assert dialog, we want stderr */
     _CrtSetReportMode(_CRT_ERROR, _CRTDBG_MODE_FILE);