[gnome-session] [build] Fix distclean

[Vincent Untz <vuntz src gnome org>]

commit 07bb95dae388b8f8706551a3287ace391c8b1446
Author: Vincent Untz <vuntz gnome org>
Date:   Wed Jul 1 14:43:29 2009 +0200

    [build] Fix distclean

 doc/dbus/Makefile.am |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)
---
diff --git a/doc/dbus/Makefile.am b/doc/dbus/Makefile.am
index 4c35dfa..0429d00 100644
--- a/doc/dbus/Makefile.am
+++ b/doc/dbus/Makefile.am
@@ -39,6 +39,8 @@ org.gnome.SessionManager.Inhibitor.ref.xml : $(top_srcdir)/gnome-session/org.gno
 org.gnome.SessionManager.Presence.ref.xml : $(top_srcdir)/gnome-session/org.gnome.SessionManager.Presence.xml spec-to-docbook.xsl
 	$(QUIET_GEN)$(XSLTPROC) $(top_srcdir)/doc/dbus/spec-to-docbook.xsl $< | tail -n +2 > $@
 
+CLEANFILES =				\
+	$(BUILT_SOURCES)
 
 EXTRA_DIST =				\
 	spec-to-docbook.xsl		\