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diff --git a/buildscripts/phing/classes/phing/tasks/system/SequentialTask.php b/buildscripts/phing/classes/phing/tasks/system/SequentialTask.php
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+++ b/buildscripts/phing/classes/phing/tasks/system/SequentialTask.php
@@ -0,0 +1,57 @@
+<?php
+
+/*
+ *  $Id: SequentialTask.php 59 2006-04-28 14:49:47Z mrook $
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * This software consists of voluntary contributions made by many individuals
+ * and is licensed under the LGPL. For more information please see
+ * <http://phing.info>.
+ */
+
+require_once 'phing/Task.php';
+require_once 'phing/TaskContainer.php';
+
+/**
+ * Sequential is a container task that contains other Phing Task objects.
+ *
+ * The sequential task has no attributes and does not support any nested
+ * elements apart from Ant tasks. Any valid Ant task may be embedded within the
+ * sequential task.
+ *
+ * @since 2.1.2
+ */
+class SequentialTask extends Task implements TaskContainer {
+
+    /** Optional Vector holding the nested tasks */
+    private $nestedTasks = array();
+
+    /**
+     * Add a nested task to Sequential.
+     * @param Task $nestedTask  Nested task to execute Sequential
+     */
+    public function addTask(Task $nestedTask) {
+        $this->nestedTasks[] = $nestedTask;
+    }
+
+    /**
+     * Execute all nestedTasks.
+     * @throws BuildException if one of the nested tasks fails.
+     */
+    public function main() {
+		foreach($this->nestedTasks as $task) {
+			$task->perform();
+		}
+    }
+}