Replace Condition and Mutex with the C++11 standard equivalents.

src/threadengine.cpp

@@ -81,48 +81,3 @@ void Thread::OnNotify()
 	this->Join();
 	this->flags[SF_DEAD] = true;
 }
-
-Mutex::Mutex()
-{
-	pthread_mutex_init(&mutex, NULL);
-}
-
-Mutex::~Mutex()
-{
-	pthread_mutex_destroy(&mutex);
-}
-
-void Mutex::Lock()
-{
-	pthread_mutex_lock(&mutex);
-}
-
-void Mutex::Unlock()
-{
-	pthread_mutex_unlock(&mutex);
-}
-
-bool Mutex::TryLock()
-{
-	return pthread_mutex_trylock(&mutex) == 0;
-}
-
-Condition::Condition() : Mutex()
-{
-	pthread_cond_init(&cond, NULL);
-}
-
-Condition::~Condition()
-{
-	pthread_cond_destroy(&cond);
-}
-
-void Condition::Wakeup()
-{
-	pthread_cond_signal(&cond);
-}
-
-void Condition::Wait()
-{
-	pthread_cond_wait(&cond, &mutex);
-}