Replace some STATIC_CHECK occurences by static_assert.

Author: nitrocaster

src/xrServerEntities/object_factory_impl.h

@@ -26,11 +26,11 @@ IC	void CObjectFactory::add	(const CLASS_ID &clsid, LPCSTR script_clsid)
 {
 	{
 		typedef object_type_traits::is_base_and_derived<ClientObjectBaseClass,_client_type> a;
-		STATIC_CHECK	(a::value,Client_class_must_be_derived_from_the_CLIENT_BASE_CLASS);
+        static_assert(a::value, "Client object must derive ClientObjectBaseClass");
 	}
 	{
 		typedef object_type_traits::is_base_and_derived<ServerObjectBaseClass,_server_type> a;
-		STATIC_CHECK	(a::value,Server_class_must_be_derived_from_the_SERVER_BASE_CLASS);
+        static_assert(a::value, "Server object must derive ServerObjectBaseClass");
 	}
 	add					(xr_new<CObjectItemClientServer<_client_type,_server_type> >(clsid,script_clsid));
 }
@@ -41,7 +41,7 @@ IC	void CObjectFactory::add	(const CLASS_ID &clsid, LPCSTR script_clsid)
 	{
 		typedef object_type_traits::is_base_and_derived<ClientObjectBaseClass,_unknown_type> a;
 		typedef object_type_traits::is_base_and_derived<ServerObjectBaseClass,_unknown_type> b;
-		STATIC_CHECK	(a::value || b::value,Class_must_be_derived_from_the_CLIENT_BASE_CLASS_or_SERVER_BASE_CLASS);
+        static_assert(a::value || b::value, "Class must derive ClientObjectBaseClass or ServerObjectBaseClass");
 	}
 	add					(
 		xr_new<