* NEWS: add note for net/http's incompatibility.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@2639 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

doc/NEWS

@@ -363,6 +363,11 @@
 
   Fixed so that "*a = nil" results in "a == []".
 
+: Net::HTTP
+
+  New version of Net::HTTP has introduced seriously incompatible
+  changes. For details, see document embedded in net/http.rb itself.
+
 : NameError and NoMethodError
 
   Moved and now NoMethodError < NameError < StandardError.