[gtk+] quartz: add mountain lion as version 8 to enum GdkOSXVersion

[Michael Natterer <mitch src gnome org>]

commit 709f12b9ac827f64e1c61729e99d0c87157c7044
Author: Michael Natterer <mitch gimp org>
Date:   Thu Nov 29 14:51:59 2012 +0100

    quartz: add mountain lion as version 8 to enum GdkOSXVersion
    
    Also use GDK_OSX_UNSUPPORTED instead of 0 in gdk_quartz_osx_version().
    (cherry picked from commit 9644e910a85f97aedf3f5f4fee974229f29766c3)

 gdk/quartz/gdkglobals-quartz.c |    4 ++--
 gdk/quartz/gdkquartz.h         |    3 ++-
 2 files changed, 4 insertions(+), 3 deletions(-)
---
diff --git a/gdk/quartz/gdkglobals-quartz.c b/gdk/quartz/gdkglobals-quartz.c
index c6a7a22..efcf73c 100644
--- a/gdk/quartz/gdkglobals-quartz.c
+++ b/gdk/quartz/gdkglobals-quartz.c
@@ -28,9 +28,9 @@ GdkWindow *_gdk_root = NULL;
 GdkOSXVersion
 gdk_quartz_osx_version (void)
 {
-  static gint32 minor = 0;
+  static gint32 minor = GDK_OSX_UNSUPPORTED;
 
-  if (!minor)
+  if (minor == GDK_OSX_UNSUPPORTED)
     {
       OSErr err = Gestalt (gestaltSystemVersionMinor, (SInt32*)&minor);
 
diff --git a/gdk/quartz/gdkquartz.h b/gdk/quartz/gdkquartz.h
index 3697c00..9427d1d 100644
--- a/gdk/quartz/gdkquartz.h
+++ b/gdk/quartz/gdkquartz.h
@@ -48,7 +48,8 @@ typedef enum
   GDK_OSX_LEOPARD = 5,
   GDK_OSX_SNOW_LEOPARD = 6,
   GDK_OSX_LION = 7,
-  GDK_OSX_CURRENT = 7,
+  GDK_OSX_MOUNTAIN_LION = 8,
+  GDK_OSX_CURRENT = 8,
   GDK_OSX_NEW = 99
 } GdkOSXVersion;