[totem] build: Fix use of a deprecated automake variable

[Philip Withnall <pwithnall src gnome org>]

commit 91666c36486b2a3b4c9eb8572367025b94631e63
Author: Philip Withnall <philip tecnocode co uk>
Date:   Fri Dec 20 23:33:52 2013 +0000

    build: Fix use of a deprecated automake variable
    
    ‘INCLUDES’ has been superseded by ‘AM_CPPFLAGS’.

 src/gst/Makefile.am |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/src/gst/Makefile.am b/src/gst/Makefile.am
index 31c3c32..4529192 100644
--- a/src/gst/Makefile.am
+++ b/src/gst/Makefile.am
@@ -71,7 +71,7 @@ libtotemrtlhelpers_la_LDFLAGS= -no-undefined
 include $(top_srcdir)/Makefile.decl
 
 pwd=`pwd`
-INCLUDES = \
+AM_CPPFLAGS = \
        -I$(top_srcdir)/plparse \
        -DTEST_SRCDIR=\""$(srcdir)/"\"