Converted panoramix to video splitter.

It is more a rewrite than a conversion ;)

It have removed the RGB support (it was broken for 15/16 bits
and seemed highly suspicious for 24/32 bits)
It might have been overzealous about some simplifications, if so
you are welcome to send patches.

modules/video_filter/wrapper.c

@@ -53,6 +53,7 @@ DECLARE_OPEN(logo, true)
 
 DECLARE_OPEN(clone, false)
 DECLARE_OPEN(wall, false)
+DECLARE_OPEN(panoramix, false)
 
 #undef DECLARE_OPEN
 
@@ -81,6 +82,9 @@ vlc_module_begin()
     add_submodule()
     DECLARE_MODULE(wall)
 
+    add_submodule()
+    DECLARE_MODULE(panoramix)
+
 vlc_module_end()
 
 #undef DECLARE_MODULE