[gnome-build-meta] Add back zenity

[Javier Jardón Cabezas <jjardon src gnome org>]

commit 9da00817d24b68c3411fe2ff9bc6f7ee76c5b444
Author: Javier Jardón <jjardon gnome org>
Date:   Thu May 10 14:55:56 2018 +0100

    Add back zenity
    
    This waas incorrectly removed in
    commit 74f374070088f796ad0721fa97b48de8eb765fac

 elements/core-deps.bst        |  1 +
 elements/core-deps/zenity.bst | 10 ++++++++++
 elements/core/mutter.bst      |  1 +
 3 files changed, 12 insertions(+)
---
diff --git a/elements/core-deps.bst b/elements/core-deps.bst
index 10c09db..c859192 100644
--- a/elements/core-deps.bst
+++ b/elements/core-deps.bst
@@ -132,3 +132,4 @@ depends:
 - core-deps/woff2.bst
 - core-deps/yelp-tools.bst
 - core-deps/yelp-xsl.bst
+- core-deps/zenity.bst
diff --git a/elements/core-deps/zenity.bst b/elements/core-deps/zenity.bst
new file mode 100644
index 0000000..ae243b3
--- /dev/null
+++ b/elements/core-deps/zenity.bst
@@ -0,0 +1,10 @@
+kind: autotools
+sources:
+- kind: git
+  url: git_gnome_org:zenity
+  track: master
+depends:
+- core-deps/gtk+-3.bst
+- core-deps/gnome-common.bst
+- core-deps/yelp-tools.bst
+- base.bst
diff --git a/elements/core/mutter.bst b/elements/core/mutter.bst
index bb85c1b..04cb9fe 100644
--- a/elements/core/mutter.bst
+++ b/elements/core/mutter.bst
@@ -15,6 +15,7 @@ depends:
 - core-deps/pango.bst
 - core-deps/upower.bst
 - core-deps/wayland.bst
+- core-deps/zenity.bst
 - core/gnome-desktop.bst
 - core/gsettings-desktop-schemas.bst
 - base.bst