Update NEWS and UPGRADING wrt. ext/recode unbundling

Author: cmb69

NEWS

@@ -5,6 +5,9 @@ PHP                                                                        NEWS
 - Core:
   . Fixed bug #78212 (Segfault in built-in webserver). (cmb)
 
+- Recode:
+  . Unbundled the recode extension. (cmb)
+
 11 Jul 2019, PHP 7.4.0alpha3
 
 - Core:

UPGRADING

@@ -454,6 +454,10 @@ PHP 7.4 UPGRADE NOTES
     extension. For more details see the RFC:
     https://wiki.php.net/rfc/deprecate-and-remove-ext-interbase
 
+- Recode:
+  . The recode extension has been moved to PECL. For character set/encoding
+    conversion the iconv or mbstring extensions could be used instead.
+
 - WDDX:
   . The WDDX extension has been deprecated and moved to PECL.
     RFC: https://wiki.php.net/rfc/deprecate-and-remove-ext-wddx