add wdk changes to named branch

src/common/thread.h

@@ -0,0 +1,10 @@
+#include <windows.h>
+
+typedef struct
+{
+	DWORD threadid;
+	int pipe_fd[2];
+} thread;
+
+thread *thread_new (void);
+int thread_start (thread *th, void *(*start_routine)(void *), void *arg);