get rid of piForeach

apply some code analyzer recommendations
ICU flag now check if libicu exists
prepare for more accurate growth of containers (limited PoT, then constantly increase size)

libs/main/core/picout.h

@@ -177,7 +177,9 @@ public:
 
 	private:
 		Notifier();
-		PIObject * o;
+		NO_COPY_CLASS(Notifier)
+
+		PIObject * o           = nullptr;
 		std::atomic_int new_id = {1};
 	};