Merge pull request #252 in ZP/z-push from bugfix/ZP-943-make-shared-memory-default-ipc to develop

* commit '281e0bfb':
  ZP-943 Make shared memory the default IPC provider.

src/config.php

@@ -89,7 +89,7 @@
  *  When another implementation should be used, the class can be set here explicitly.
  *  If empty Z-Push will try to use available providers.
  */
-    define('IPC_PROVIDER', 'IpcSharedMemoryProvider');
+    define('IPC_PROVIDER', '');
 
 /**********************************************************************************
  *  Logging settings

src/lib/core/interprocessdata.php

@@ -48,7 +48,7 @@ abstract class InterProcessData {
 
     // Defines which IPC provider to load, first has preference
     // if IPC_PROVIDER in the main config  is set, that class will be loaded
-    static private $providerLoadOrder = array('IpcMemcachedProvider', 'IpcSharedMemoryProvider');
+    static private $providerLoadOrder = array('IpcSharedMemoryProvider', 'IpcMemcachedProvider');
     static protected $devid;
     static protected $pid;
     static protected $user;