by a simple click (was a double click before) which is more
natural

 (at the moment the tree control is still entirely rebuilt,
 but now it will be easier to fix that)
 + coding style fixes

 (was broken for quite a long time...)
* ctrl_tree.cpp: removed debug messages

Hosts should never send packets with TTL=0

psz_uri is NEEDED - it determines the destination for SAP announces
Go read the code before you commit

* modules/video_output/x11/xcommon.c: support cropping to i_visible_width/height in xvideo (not implemented in x11 yet).

* src/video_output/video_output.c: get rid of hack for for grey line with hdtv streams (proper way is to have video outputs support cropping to i_visible_width/height).

* src/video_output/vout_pictures.c: use fmt_in.i_visible_width/height and i_sar_num/den in vout_PlacePicture().

http://www.itamarst.org/writings/win32sockets.html

  does what it should (if set to "false", the window is hidden
  when the theme is loaded for the first time)