Added userland daemon exception for exceptions specific to the userland daemon

Author: Andrew Carter

src/Driver/Userland/Exception/ConnectionException.php

@@ -2,11 +2,9 @@
 
 namespace PHPFastCGI\FastCGIDaemon\Driver\Userland\Exception;
 
-use PHPFastCGI\FastCGIDaemon\Exception\DaemonException;
-
 /**
  * Connection exceptions.
  */
-class ConnectionException extends DaemonException
+class ConnectionException extends UserlandDaemonException
 {
 }

src/Driver/Userland/Exception/ProtocolException.php

@@ -2,11 +2,9 @@
 
 namespace PHPFastCGI\FastCGIDaemon\Driver\Userland\Exception;
 
-use PHPFastCGI\FastCGIDaemon\Exception\DaemonException;
-
 /**
  * Protocol exceptions.
  */
-class ProtocolException extends DaemonException
+class ProtocolException extends UserlandDaemonException
 {
 }

src/Driver/Userland/Exception/UserlandDaemonException.php

@@ -0,0 +1,12 @@
+<?php
+
+namespace PHPFastCGI\FastCGIDaemon\Driver\Userland\Exception;
+
+use PHPFastCGI\FastCGIDaemon\Exception\DaemonException;
+
+/**
+ * Exceptions specific to the userland daemon.
+ */
+class UserlandDaemonException extends DaemonException
+{
+}