MDL-22054 converting block name strings to pluginname

AMOS START
 MOV [blockname,block_search],[pluginname,block_search]
AMOS END

blocks/search/block_search.php

@@ -14,7 +14,7 @@
 class block_search extends block_base {
 
     function init() {
-      $this->title = get_string('blockname', 'block_search');
+      $this->title = get_string('pluginname', 'block_search');
       $this->cron = 1;
       $this->version = 2008031500;
     } //init

blocks/search/lang/en/block_search.php

@@ -23,7 +23,6 @@
  * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  */
 
-$string['blockname'] = 'Global Search';
 $string['blockssearchswitches'] = 'Indexer activation for blocks';
 $string['bytes'] = 'bytes (0 stands for no limits)';
 $string['configbuttonlabel'] = 'Button label';
@@ -42,6 +41,7 @@ $string['modulessearchswitches'] = 'Indexer activation for modules';
 $string['nosearchableblocks'] = 'No searchable blocks';
 $string['nosearchablemodules'] = 'No searchable modules';
 $string['pdfhandling'] = 'Acrobat PDF handling';
+$string['pluginname'] = 'Global Search';
 $string['searchdiscovery'] = 'Searchable items discovery';
 $string['searchmoodle'] = 'Search Moodle';
 $string['usemoodleroot'] = 'Use moodle root for external converters';