Add pthreads test

TestPrograms/test_pthreads.cxx

@@ -0,0 +1,14 @@
+#include <string>
+#include <pthreads.h>
+
+void* function(void *ptr)
+{
+}
+
+int main(int argc, char* argv[])
+{
+	pthread_t thread;
+	int ret = pthread_create(&thread, NULL, function, (void*)0);
+	pthread_join(thread, NULL);
+	return 0;
+}