panel-plugin/Makefile.am: rename INCLUDES to AM_CPPFLAGS.

Upstream changed the name of the variable and now INCLUDES is
deprecated. See, for example, the "Variables used when building a
program" section of the automake manual.

diff --git a/panel-plugin/Makefile.am b/panel-plugin/Makefile.am
index 36695023850178ec4f1e6400eac5e04af07871a2..bbf69d7b304e4c2baedd9ef434be70ed6b120703 100644 (file)
--- a/panel-plugin/Makefile.am
+++ b/panel-plugin/Makefile.am
@@ -18,7 +18,7 @@
 # http://www.fsf.org/licensing/licenses/gpl.html
 #
 
-INCLUDES =                                                             \
+AM_CPPFLAGS =                                                          \
        -I$(top_srcdir)                                                 \
        -DG_LOG_DOMAIN=\"xfce4-hdaps\"                                  \
        -DPACKAGE_LOCALE_DIR=\"$(localedir)\"                           \