Introduce gdm-settings and its missing dep blueprint-compiler

gdm-settings is pretty useful for customizing GNOME's login screen
without having to dig through configuration files and all those hacks
manually.

programming/build/blueprint-compiler/actions.py

@@ -0,0 +1,17 @@
+#!/usr/bin/python
+# -*- coding: utf-8 -*-
+
+# Licensed under GNU General Public License, version 3.
+# See the file https://www.gnu.org/licenses/gpl.txt
+
+from pisi.actionsapi import mesontools
+from pisi.actionsapi import get
+
+def setup():
+    mesontools.configure()
+
+def build():
+    mesontools.build()
+
+def install():
+    mesontools.install()