[gnome-initial-setup] Fix distcheck

[Jasper St. Pierre <jstpierre src gnome org>]

commit 939e69abffec331f0e65879880bd426639e5ee22
Author: Matthias Clasen <mclasen redhat com>
Date:   Wed Oct 17 12:03:32 2012 -0400

    Fix distcheck
    
    This is the secret sauce to make --withsystemdsystemunitdir useful

 Makefile.am |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)
---
diff --git a/Makefile.am b/Makefile.am
index 762d828..ee1b61e 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -8,3 +8,6 @@ EXTRA_DIST = \
     COPYING \
     AUTHORS \
     NEWS
+
+DISTCHECK_CONFIGURE_FLAGS = \
+        --with-systemdsystemunitdir=$$dc_install_base/$(systemdsystemunitdir)