docs: Note MESA_configless_context as superseded

Reviewed-by: Kristian Høgsberg <krh@bitplanet.net>
Reviewed-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Adam Jackson <ajax@redhat.com>
diff --git a/docs/specs/MESA_configless_context.spec b/docs/specs/MESA_configless_context.spec
index f2fafb3..d7ba62d 100644
--- a/docs/specs/MESA_configless_context.spec
+++ b/docs/specs/MESA_configless_context.spec
@@ -12,11 +12,12 @@
 
 Status
 
-    Proposal
+    Superseded by the functionally identical EGL_KHR_no_config_context
+    extension.
 
 Version
 
-    Version 1, February 28, 2014
+    Version 2, September 9, 2016
 
 Number
 
@@ -121,5 +122,8 @@
 
 Revision History
 
+    Version 2, September 9, 2016
+        Defer to EGL_KHR_no_config_context (Adam Jackson)
+
     Version 1, February 28, 2014
         Initial draft (Neil Roberts)