[clutter] docs: Add the ::destroy change in the release notes

[Emmanuele Bassi <ebassi src gnome org>]

commit d83fbd7bdf8cbeb5019e0be02ba4f0ac0aa5c436
Author: Emmanuele Bassi <ebassi gnome org>
Date:   Thu Jan 12 10:44:28 2012 +0000

    docs: Add the ::destroy change in the release notes
    
    Given that I had to fix code inside Clutter that did not check for NULL
    pointers, I assume other people may experience the same issues.

 README.in |    6 ++++++
 1 files changed, 6 insertions(+), 0 deletions(-)
---
diff --git a/README.in b/README.in
index 526ca08..d79c257 100644
--- a/README.in
+++ b/README.in
@@ -289,6 +289,12 @@ features).
 Release Notes for Clutter 1.10
 -------------------------------------------------------------------------------
 
+â The ClutterActor::destroy signal is going to be emitted at the beginning
+  of the dispose sequence of a ClutterActor, instead of the end. This allows
+  to access the state of the actor being destroyed, instead of just being
+  able to use its pointer. This may expose bugs in code that does not check
+  for NULL actor pointers.
+
 â The long since broken depth cueing support in ClutterStage has been
   deprecated; the fixed pipeline fog API has been pretty much useless
   since the switch to colors and textures with premultiplied alpha