Merge branch 'PHP-5.5' into PHP-5.6

* PHP-5.5:
  Added suggestion about opcache.revalidate_freq setting in development environment

Author: dstogov

ext/opcache/README

@@ -40,7 +40,8 @@ after OPcache.
 Speed Tuning
 -------------
 
-We recommend the following configuration options for best performance.
+We recommend the following configuration options for best performance
+in a production environment.
 
 opcache.memory_consumption=128
 opcache.interned_strings_buffer=8
@@ -59,6 +60,9 @@ opcache.enable_file_override=1
 In some cases you may like to prefer enabling/disabling some features
 to avoid incompatibilities at the cost of some performance degradation.
 
+For development environment we would recommend setting opcache.revalidate_freq
+into 0.
+
 Configuration Directives
 ------------------------