Allow AIThreadSafe*DC classes to be constructed with zero or one parameter.

Also, allow AIThreadSafeSingleThreadDC objects to auto convert
to it's underlaying type, to assign that type and to write it
directly to an ostream.

indra/llcommon/aithreadsafe.h

@@ -256,6 +256,8 @@ class AIThreadSafeDC : public AIThreadSafe<T>
 public:
 	// Construct a wrapper around a default constructed object.
 	AIThreadSafeDC(void) { new (AIThreadSafe<T>::ptr()) T; }
+	// Allow an arbitrary parameter to be passed for construction.
+	template<typename T2> AIThreadSafeDC(T2 const& val) { new (AIThreadSafe<T>::ptr()) T(val); }
 };
 
 /**
@@ -472,10 +474,12 @@ class AIThreadSafeSimpleDC : public AIThreadSafeSimple<T>
 public:
 	// Construct a wrapper around a default constructed object.
 	AIThreadSafeSimpleDC(void) { new (AIThreadSafeSimple<T>::ptr()) T; }
+	// Allow an arbitrary parameter to be passed for construction.
+	template<typename T2> AIThreadSafeSimpleDC(T2 const& val) { new (AIThreadSafeSimple<T>::ptr()) T(val); }
 
 protected:
 	// For use by AIThreadSafeSimpleDCRootPool
-	AIThreadSafeSimpleDC(LLAPRPool& parent) : AIThreadSafeSimple<T>(parent) { new (AIThreadSafeSimple<T>::ptr()) T; }
+	AIThreadSafeSimpleDC(LLAPRRootPool& parent) : AIThreadSafeSimple<T>(parent) { new (AIThreadSafeSimple<T>::ptr()) T; }
 };
 
 // Helper class for AIThreadSafeSimpleDCRootPool to assure initialization of
@@ -664,6 +668,17 @@ class AIThreadSafeSingleThreadDC : public AIThreadSafeSingleThread<T>
 public:
 	// Construct a wrapper around a default constructed object.
 	AIThreadSafeSingleThreadDC(void) { new (AIThreadSafeSingleThread<T>::ptr()) T; }
+	// Allow an arbitrary parameter to be passed for construction.
+	template<typename T2> AIThreadSafeSingleThreadDC(T2 const& val) { new (AIThreadSafeSingleThread<T>::ptr()) T(val); }
+
+	// Allow assigning with T.
+	AIThreadSafeSingleThreadDC& operator=(T const& val) { AIThreadSafeSingleThread<T>::accessed(); *AIThreadSafeSingleThread<T>::ptr() = val; return *this; }
+	// Allow writing to an ostream.
+	friend std::ostream& operator<<(std::ostream& os, AIThreadSafeSingleThreadDC const& wrapped_val) { wrapped_val.accessed(); return os << *wrapped_val.ptr(); }
+
+	// Automatic conversion to T.
+	operator T&(void) { AIThreadSafeSingleThread<T>::accessed(); return *AIThreadSafeSingleThread<T>::ptr(); }
+	operator T const&(void) const { AIThreadSafeSingleThread<T>::accessed(); return *AIThreadSafeSingleThread<T>::ptr(); }
 };
 
 /**