[clutter] Add public CLUTTER_HAS_WAYLAND_COMPOSITOR_SUPPORT define

[Robert Bragg <rbragg src gnome org>]

commit af294aafe600145a2d891ad9a0ba5418f6583cc6
Author: Robert Bragg <robert linux intel com>
Date:   Tue Dec 6 21:53:57 2011 +0000

    Add public CLUTTER_HAS_WAYLAND_COMPOSITOR_SUPPORT define
    
    When clutter has been built with Wayland compositor support then we now
    expose a public CLUTTER_HAS_WAYLAND_COMPOSITOR_SUPPORT define so that
    applications can #ifdef code that depends on the api that this feature
    implies.
    
    Reviewed-by: Emmanuele Bassi <ebassi linux intel com>

 configure.ac |    5 +++--
 1 files changed, 3 insertions(+), 2 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index 15637d6..977fe4d 100644
--- a/configure.ac
+++ b/configure.ac
@@ -193,6 +193,7 @@ FLAVOUR_LIBS=""
 FLAVOUR_CFLAGS=""
 CLUTTER_BACKENDS=""
 CLUTTER_INPUT_BACKENDS=""
+CLUTTER_CONFIG_DEFINES=
 
 experimental_backend=no
 experimental_input_backend=no
@@ -335,6 +336,8 @@ AS_IF([test "x$enable_wayland_compositor" = "xyes"],
         PKG_CHECK_EXISTS([wayland-server],
 			 [BACKEND_PC_FILES="$BACKEND_PC_FILES wayland-server"], [])
         SUPPORT_WAYLAND_COMPOSITOR=1
+	CLUTTER_CONFIG_DEFINES="$CLUTTER_CONFIG_DEFINES
+#define CLUTTER_HAS_WAYLAND_COMPOSITOR_SUPPORT 1"
         AC_DEFINE([HAVE_CLUTTER_WAYLAND_COMPOSITOR], [1], [Have wayland compositor support])
       ])
 AM_CONDITIONAL(SUPPORT_WAYLAND_COMPOSITOR, [test "x$SUPPORT_WAYLAND_COMPOSITOR" = "x1"])
@@ -508,8 +511,6 @@ AC_CACHE_SAVE
 
 dnl === Clutter configuration =================================================
 
-CLUTTER_CONFIG_DEFINES=
-
 # windowing systems
 AS_IF([test "x$SUPPORT_X11" = "x1"],
       [CLUTTER_CONFIG_DEFINES="$CLUTTER_CONFIG_DEFINES