Make sure the wxWindows development headers and libraries are present when skins2 module is enabled. Without wxWindows the skins2 interface is not very usable.

* de.po: finished the G. l10n for 0.8.1

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"}'