[gnome-control-center] online-accounts: Use AM_CPPFLAGS rather than INCLUDES

[Bastien Nocera <hadess src gnome org>]

commit 46b73580690aecf5af567594e7bf120fb7891c76
Author: Christophe Fergeau <cfergeau redhat com>
Date:   Wed Jun 25 11:56:03 2014 +0200

    online-accounts: Use AM_CPPFLAGS rather than INCLUDES
    
    This is deprecated in newer automake versions, and this causes warnings
    with automake 1.14:
    panels/printers/Makefile.am:3: warning: 'INCLUDES' is the old name for
    AM_CPPFLAGS' (or '*_CPPFLAGS')
    
    https://bugzilla.gnome.org/show_bug.cgi?id=732189

 panels/online-accounts/Makefile.am |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/panels/online-accounts/Makefile.am b/panels/online-accounts/Makefile.am
index 5cf42d5..e357172 100644
--- a/panels/online-accounts/Makefile.am
+++ b/panels/online-accounts/Makefile.am
@@ -2,7 +2,7 @@ cappletname = online-accounts
 
 SUBDIRS = icons
 
-INCLUDES =                                             \
+AM_CPPFLAGS =                                          \
        $(PANEL_CFLAGS)                                 \
        $(ONLINE_ACCOUNTS_PANEL_CFLAGS)                 \
        -I$(top_srcdir)/libgd                           \