First pass at Media Resource Locator parsing in the rc interface. It allows the following types to be used with the add command:

add dvd:///dev/dvd:sout='#std{mux="ts",access="udp",url="127.0.0.1:1234"}'
add dvd:///dev/dvd --sout '#std{mux="ts",access="udp",url="127.0.0.1:1234"}'