gstreamer: 1.15.1 -> 1.16.0

Changes needed:

* core: dbghelp disabled as it's not needed
* core: Fixed script not being executable and skipped by patchShebangs
* base: gtk_doc disabled because of wayland symbol error
* ges: Patch removed that was merged upstream:
  https://bugzilla.gnome.org/show_bug.cgi?id=794856#c16

pkgs/development/libraries/gstreamer/rtsp-server/default.nix

@@ -6,7 +6,7 @@
 
 stdenv.mkDerivation rec {
   name = "gst-rtsp-server-${version}";
-  version = "1.15.1";
+  version = "1.16.0";
 
   meta = with stdenv.lib; {
     description = "Gstreamer RTSP server";
@@ -21,7 +21,7 @@ stdenv.mkDerivation rec {
 
   src = fetchurl {
     url = "${meta.homepage}/src/gst-rtsp-server/${name}.tar.xz";
-    sha256 = "0d0jaf7ir40dxpxs41wyb7m7riyl7wsqcb5qvd4vhwpz0dwxhpvl";
+    sha256 = "069zy159izy50blci9fli1i2r8jh91qkmgrz1n0xqciy3bn9x3hr";
   };
 
   outputs = [ "out" "dev" ];