[gnome-builder] xdg-app: add debug build helper

[Christian Hergert <chergert src gnome org>]

commit abb4654fbc62d86cbf0aeed8295996f5a45050aa
Author: Christian Hergert <chergert redhat com>
Date:   Tue Oct 27 22:59:04 2015 -0700

    xdg-app: add debug build helper

 build/xdg-app/gnome-builder-debug.def |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)
---
diff --git a/build/xdg-app/gnome-builder-debug.def b/build/xdg-app/gnome-builder-debug.def
new file mode 100644
index 0000000..adc0c35
--- /dev/null
+++ b/build/xdg-app/gnome-builder-debug.def
@@ -0,0 +1,3 @@
+source gnome-builder.def
+
+CONFIGURE[gnome-builder]="--enable-tracing --enable-debug"