[gtk+/gtk-2-24] Fix distcheck

[Matthias Clasen <matthiasc src gnome org>]

commit 9169b6aa69292bc1ff1d0cdef8faf1de2ef793d4
Author: Matthias Clasen <mclasen redhat com>
Date:   Mon Feb 16 10:31:46 2015 -0500

    Fix distcheck

 docs/reference/gtk/Makefile.am |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)
---
diff --git a/docs/reference/gtk/Makefile.am b/docs/reference/gtk/Makefile.am
index a24b4da..c239445 100644
--- a/docs/reference/gtk/Makefile.am
+++ b/docs/reference/gtk/Makefile.am
@@ -375,6 +375,8 @@ man_MANS = gtk-query-immodules-2.0.1 gtk-update-icon-cache.1 gtk-builder-convert
 
 BUILT_EXTRA_DIST = $(man_MANS)
 
+DISTCLEANFILES = $(man_MANS)
+
 endif
 
 dist-hook-local: $(BUILT_EXTRA_DIST)