Update NEWS and version

Author: derickr

NEWS

@@ -1,6 +1,8 @@
 PHP                                                                        NEWS
 |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
-21 Jan 2021, PHP 7.4.15RC1
+?? ??? 2021, PHP 7.4.16
+
+21 Jan 2021, PHP 7.4.15
 
 - Core:
   . Fixed bug #80523 (bogus parse error on >4GB source code). (Nikita)

configure.ac

@@ -17,7 +17,7 @@ dnl Basic autoconf initialization, generation of config.nice.
 dnl ----------------------------------------------------------------------------
 
 AC_PREREQ([2.68])
-AC_INIT([PHP],[7.4.13-dev],[https://bugs.php.net],[php],[https://www.php.net])
+AC_INIT([PHP],[7.4.16-dev],[https://bugs.php.net],[php],[https://www.php.net])
 AC_CONFIG_SRCDIR([main/php_version.h])
 AC_CONFIG_AUX_DIR([build])
 AC_PRESERVE_HELP_ORDER