doc: document go1.0.2

R=golang-dev, dave, rsc
CC=golang-dev
https://golang.org/cl/6298079

doc/devel/release.html

@@ -45,6 +45,14 @@ bug</a> that can lead to memory corruption.
 It also includes several minor code and documentation fixes.
 </p>
 
+<p>
+go1.0.2 (released 2012/06/13) was issued to fix two bugs in the implementation
+of maps using struct or array keys: 
+<a href="http://code.google.com/p/go/issues/detail?id=3695">issue 3695</a> and
+<a href="http://code.google.com/p/go/issues/detail?id=3573">issue 3573</a>.
+It also includes many minor code and documentation fixes.
+</p>
+
 <p>
 See the <a href="http://code.google.com/p/go/source/list?name=release-branch.go1">go1 release branch history</a> for the complete list of changes.
 </p>