XML-RPC: break up class-IXR.php into individual class files.

See #37827.


git-svn-id: https://develop.svn.wordpress.org/trunk@38389 602fd350-edb4-49c9-b593-d223f7449a82

src/wp-includes/IXR/class-IXR-base64.php

@@ -0,0 +1,32 @@
+<?php
+
+/**
+ * IXR_Base64
+ *
+ * @package IXR
+ * @since 1.5.0
+ */
+class IXR_Base64
+{
+    var $data;
+
+	/**
+	 * PHP5 constructor.
+	 */
+    function __construct( $data )
+    {
+        $this->data = $data;
+    }
+
+	/**
+	 * PHP4 constructor.
+	 */
+	public function IXR_Base64( $data ) {
+		self::__construct( $data );
+	}
+
+    function getXml()
+    {
+        return '<base64>'.base64_encode($this->data).'</base64>';
+    }
+}