MDL-22054 converting block name strings to pluginname

AMOS START
 MOV [blockmenutitle,core_blog],[pluginname,block_blog_menu]
AMOS END

blocks/blog_menu/block_blog_menu.php

@@ -31,7 +31,7 @@ require_once($CFG->dirroot .'/blog/lib.php');
 class block_blog_menu extends block_base {
 
     function init() {
-        $this->title = get_string('blockmenutitle', 'blog');
+        $this->title = get_string('pluginname', 'block_blog_menu');
         $this->version = 2009071700;
     }
 

blocks/blog_menu/lang/en/block_blog_menu.php

@@ -0,0 +1,27 @@
+<?php
+
+// This file is part of Moodle - http://moodle.org/
+//
+// Moodle is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// Moodle is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
+
+/**
+ * Strings for component 'block_blog_menu', language 'en', branch 'MOODLE_20_STABLE'
+ *
+ * @package   block_blog_menu
+ * @copyright 1999 onwards Martin Dougiamas  {@link http://moodle.com}
+ * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+
+$string['pluginname'] = 'Blog Menu';
+