Added information in NEWS and UPGRADING

Author: bwoebi

NEWS

@@ -3,6 +3,10 @@ PHP                                                                        NEWS
 ?? ??? 2014, PHP 5.6.0 Alpha 3
 
 06 Feb 2014, PHP 5.6.0 Alpha 2
+- Core:
+  . Added T_POW (**) operator
+    (RFC: https://wiki.php.net/rfc/pow-operator). (Tjerk Meesters)
+
 - mysqli
   . Added new function mysqli_get_links_stats() as well as new INI variable
     mysqli.rollback_on_cached_plink of type bool (Andrey)

UPGRADING

@@ -43,7 +43,7 @@ PHP X.Y UPGRADE NOTES
 2. New Features
 ========================================
 
-- Added constant scalar expressions syntax
+- Added constant scalar expressions syntax.
   (https://wiki.php.net/rfc/const_scalar_exprs)
 
 - Added dedicated syntax for variadic functions.
@@ -52,6 +52,9 @@ PHP X.Y UPGRADE NOTES
 - Added support for argument unpacking to complement the variadic syntax.
   (https://wiki.php.net/rfc/argument_unpacking)
 
+- Added T_POW (**) operator.
+  (https://wiki.php.net/rfc/pow-operator)
+
 - The php://input stream is now re-usable and can be used concurrently with 
   enable_post_data_reading=0.