Cleanup jthread and fix win32 build

src/util/container.h

@@ -83,8 +83,6 @@ class MutexedMap
 public:
 	MutexedMap()
 	{
-		m_mutex.Init();
-		assert(m_mutex.IsInitialized());
 	}
 	
 	void set(const Key &name, const Value &value)
@@ -150,8 +148,6 @@ class MutexedIdGenerator
 public:
 	MutexedIdGenerator()
 	{
-		m_mutex.Init();
-		assert(m_mutex.IsInitialized());
 	}
 	
 	// Returns true if found
@@ -253,7 +249,6 @@ class MutexedQueue
 public:
 	MutexedQueue()
 	{
-		m_mutex.Init();
 	}
 	bool empty()
 	{

src/util/thread.h

@@ -32,7 +32,6 @@ public:
 	MutexedVariable(T value):
 		m_value(value)
 	{
-		m_mutex.Init();
 	}
 
 	T get()
@@ -75,7 +74,6 @@ public:
 		JThread(),
 		run(true)
 	{
-		run_mutex.Init();
 	}
 
 	virtual ~SimpleThread()