[gtk-doc] make: distribute new .png files

[Stefan Kost <stefkost src gnome org>]

commit 71e0daf9792bc77154dd364713b08d771c290d33
Author: Dieter Verfaillie <dieterv optionexplicit be>
Date:   Wed Sep 18 00:01:23 2013 +0200

    make: distribute new .png files
    
    added in 0fab530ad580011d8fee87755a37d180392e9970
    
    https://bugzilla.gnome.org/show_bug.cgi?id=708268

 Makefile.am |   11 +++++++----
 1 files changed, 7 insertions(+), 4 deletions(-)
---
diff --git a/Makefile.am b/Makefile.am
index fa2e3cc..4c6b811 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -75,10 +75,13 @@ EXTRA_DIST = \
        version-greater-or-equal.xsl \
        devhelp2.xsl     \
        gtk-doc.cat.in  \
-       home.png  \
-       left.png  \
-       right.png \
-       up.png    \
+       home.png              \
+       left.png              \
+       left-insensitive.png  \
+       right.png             \
+       right-insensitive.png \
+       up.png                \
+       up-insensitive.png    \
        doc/README            \
        doc/authors.txt       \
        doc/gnome.txt         \