Bring in google3-style DISALLOW_* macros.

I've been meaning to do this for a very long time...

Change-Id: Ia8c16eee7c026c3c9505399948485fb778fb0152
diff --git a/libc/private/ScopedPthreadMutexLocker.h b/libc/private/ScopedPthreadMutexLocker.h
index 06b8e37..43dbdc1 100644
--- a/libc/private/ScopedPthreadMutexLocker.h
+++ b/libc/private/ScopedPthreadMutexLocker.h
@@ -19,6 +19,8 @@
 
 #include <pthread.h>
 
+#include "bionic_macros.h"
+
 class ScopedPthreadMutexLocker {
  public:
   explicit ScopedPthreadMutexLocker(pthread_mutex_t* mu) : mu_(mu) {
@@ -32,9 +34,7 @@
  private:
   pthread_mutex_t* mu_;
 
-  // Disallow copy and assignment.
-  ScopedPthreadMutexLocker(const ScopedPthreadMutexLocker&);
-  void operator=(const ScopedPthreadMutexLocker&);
+  DISALLOW_COPY_AND_ASSIGN(ScopedPthreadMutexLocker);
 };
 
 #endif // SCOPED_PTHREAD_MUTEX_LOCKER_H