Add CRYPTOPP_UNUSED to help supress unused variable warnings. Applied to AlgorithmParametersTemplate because its use is nearly ubiquitous

algparam.h

@@ -320,6 +320,7 @@ public:
 	void MoveInto(void *buffer) const
 	{
 		AlgorithmParametersTemplate<T>* p = new(buffer) AlgorithmParametersTemplate<T>(*this);
+		CRYPTOPP_UNUSED(p);
 	}
 
 protected:

config.h

@@ -94,6 +94,8 @@
 
 typedef unsigned char byte;		// put in global namespace to avoid ambiguity with other byte typedefs
 
+#define CRYPTOPP_UNUSED(x) ((void)x);		// cast to void. Portable way to suppress unused variable
+
 NAMESPACE_BEGIN(CryptoPP)
 
 typedef unsigned short word16;