Merge in mingw changes.

git-svn-id: https://www.unprompted.com/svn/projects/tildefriends/trunk@3873 ed5197a5-7fde-0310-b194-c3ffbd925b24

src/tests.c

@@ -9,6 +9,11 @@
 #include <string.h>
 #include <unistd.h>
 
+#if defined(_WIN32)
+#define WIFEXITED(x) 1
+#define WEXITSTATUS(x) (x)
+#endif
+
 static void _test_nop(const tf_test_options_t* options)
 {
 	FILE* file = fopen("out/test.js", "w");