[gnome-raw-thumbnailer] Fix an automake warning

[Hubert Figuière <hub src gnome org>]

commit 8741be45eeb5a0beec1e4b0fb94223ec156c15df
Author: Hubert Figuière <hub figuiere net>
Date:   Sat Mar 8 22:32:19 2014 -0500

    Fix an automake warning

 src/Makefile.am |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/src/Makefile.am b/src/Makefile.am
index 98ae537..cd10446 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -1,7 +1,7 @@
 
 
 
-INCLUDES = -I$(top_srcdir)                                              \
+AM_CPPFLAGS = -I$(top_srcdir)                                              \
            $(GNOME_CFLAGS) \
            $(OPENRAW_CFLAGS) \
            -DG_LOG_DOMAIN=\"raw-thumbnailer\"    \