[gtkglext] Remove unexpanded GDKGLEXT_MULTIHEAD_SUPPORT symbol

[Emmanuele Bassi <ebassi src gnome org>]

commit 04131c5f69070b2f194f02edd45b0622ca03793c
Author: Emmanuele Bassi <ebassi gnome org>
Date:   Sun Nov 9 23:02:01 2014 +0000

    Remove unexpanded GDKGLEXT_MULTIHEAD_SUPPORT symbol
    
    It's not expanded any more.

 configure.ac                   |    1 -
 gdk/quartz/gdkglquery-quartz.m |    2 --
 gtkglext-uninstalled.pc.in     |    2 +-
 gtkglext.pc.in                 |    2 +-
 4 files changed, 2 insertions(+), 5 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index b5412cd..e19683d 100644
--- a/configure.ac
+++ b/configure.ac
@@ -409,7 +409,6 @@ _______EOF
 
        cat >>$outfile <<_______EOF
 $gdkglext_windowing
-$gdkglext_multihead_support
 _______EOF
 
        cat >>$outfile <<_______EOF
diff --git a/gdk/quartz/gdkglquery-quartz.m b/gdk/quartz/gdkglquery-quartz.m
index 55b7045..e1da650 100644
--- a/gdk/quartz/gdkglquery-quartz.m
+++ b/gdk/quartz/gdkglquery-quartz.m
@@ -25,9 +25,7 @@
 #include "gdkglconfig-quartz.h"
 #include "gdkglquery.h"
 
-#ifdef GDKGLEXT_MULTIHEAD_SUPPORT
 #include <gdk/gdkdisplay.h>
-#endif /* GDKGLEXT_MULTIHEAD_SUPPORT */
 
 /**
  * gdk_gl_query_extension:
diff --git a/gtkglext-uninstalled.pc.in b/gtkglext-uninstalled.pc.in
index 88caf2b..688b55e 100644
--- a/gtkglext-uninstalled.pc.in
+++ b/gtkglext-uninstalled.pc.in
@@ -1,7 +1,7 @@
 target= gdktarget@
 api_version= GTKGLEXT_API_VERSION@
 
-multihead= GDKGLEXT_MULTIHEAD_SUPPORT@
+multihead=yes
 
 Name: GtkGLExt Uninstalled
 Description: OpenGL Extension to GTK+ (${target} target), Not Installed
diff --git a/gtkglext.pc.in b/gtkglext.pc.in
index b5d70a6..cafe8ea 100644
--- a/gtkglext.pc.in
+++ b/gtkglext.pc.in
@@ -6,7 +6,7 @@ includedir= includedir@
 target= gdktarget@
 api_version= GTKGLEXT_API_VERSION@
 
-multihead= GDKGLEXT_MULTIHEAD_SUPPORT@
+multihead=yes
 
 Name: GtkGLExt
 Description: OpenGL Extension to GTK+ (${target} target)