Method push

src/common/classes/stack.h:132–141

		}

		void push(const Object& e)
		{
			if (!stk && stk_cache)
			{
				stk = stk_cache;
				stk_cache = 0;
			}
			stk = stk ? stk->push(e, getPool())
					  : FB_NEW_POOL(getPool()) Entry(e, 0);
		}

		void push(const Stack& s)
		{