Jane Jacobs and Robert Moses are routinely pitted against each other--or at least their philosophies are--in conversations regarding street life and car and highway culture in New York City.   Earlier this spring, the Museum of the City of New York hosted a panel discussion on the two big thinkers called "Robert Moses, Jane Jacobs and the Automobile." The auditorium was packed, and the conversation lively, as discussions on these contentious subjects often are.