Mention the command search path issue on Windows. Pointed out by

NAJIMA Hiroki in [ruby-dev:42276].


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@29315 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

doc/NEWS-1.9.2

@@ -123,7 +123,7 @@ with all sufficient information, see the ChangeLog file.
       * Integer#rationalize
 
   * Kernel
-    * new method:
+    * new methods:
       * Kernel#respond_to_missing?
       * Kernel#singleton_class
       * Kernel#require_relative
@@ -135,6 +135,16 @@ with all sufficient information, see the ChangeLog file.
     * incompatible changes:
       * Kernel#instance_eval yields the receiver.
 
+      * Kernel#exec
+      * Kernel#spawn
+      * Kernel#system
+      * Kernel#` (`...`)
+        ..etc.
+
+        On Windows, the current directory is no longer implicitly
+        prepended to the default command search path, just like other
+        platforms.
+
   * MatchData
     * New method:
       * MatchData#==