The Input Ui needs to be reviewed since I added a few buttons that weren't specified in the wiki.

- directx, direct3d: for non-overlay surfaces, remove the background brush after first frame is displayed to avoid flickering during repaints

This is not finished because I don't have a windows machine. And needs some relabeling.:

Should fix packaging, too.

Fix by thresh for syslog logging. Initialized pointers to NULL, so it can be checked upon in the code.

Only build x11 plugin when we have Xext.h.

Now, UDP-Lite really works!

This is completely untested because vlc does not link at the moment :(

Work from DJ_Mulder on the forum, changes by /me helped by dionoea and jpsaman.