CRM-12341 - use wildcards only as suffix

----------------------------------------
* CRM-12341: prev/next cache should not do double-ended wildcard search
  http://issues.civicrm.org/jira/browse/CRM-12341

CRM/Core/BAO/PrevNextCache.php

@@ -314,7 +314,7 @@ AND (entity_id1 = %2 OR entity_id2 = %2)
       if ($action == 'select') {
         $whereClause .= "AND is_selected = 0";
         $sql = "UPDATE civicrm_prevnext_cache SET is_selected = 1 {$whereClause} {$entity_whereClause}";
-        $params[1] = array("%{$cacheKey}%", 'String');
+        $params[1] = array("{$cacheKey}%", 'String');
       }
       elseif ($action == 'unselect') {
         $whereClause .= "AND is_selected = 1";
@@ -330,7 +330,7 @@ SET    is_selected = 0
 WHERE  cacheKey LIKE %1 AND is_selected = 1
        {$entity_whereClause}
 ";
-      $params[1] = array("%{$cacheKey}%", 'String');
+      $params[1] = array("{$cacheKey}%", 'String');
     }
     CRM_Core_DAO::executeQuery($sql, $params);
   }
@@ -360,7 +360,7 @@ WHERE cacheKey LIKE %1
       $entity_whereClause
 ORDER BY id
 ";
-      $params[1] = array("%{$cacheKey}%", 'String');
+      $params[1] = array("{$cacheKey}%", 'String');
 
       $contactIds = array($cacheKey => array());
       $cIdDao = CRM_Core_DAO::executeQuery($sql, $params);
@@ -383,8 +383,8 @@ WHERE  cacheKey LIKE %1
   AND  is_selected=1
   AND  cacheKey NOT LIKE %2
 ";
-    $params1[1] = array("%{$cacheKey}%", 'String');
-    $params1[2] = array("%{$cacheKey}_alphabet%", 'String');
+    $params1[1] = array("{$cacheKey}%", 'String');
+    $params1[2] = array("{$cacheKey}_alphabet%", 'String');
     $dao = CRM_Core_DAO::executeQuery($query, $params1);
 
     $val = array( );
@@ -415,8 +415,8 @@ WHERE  cacheKey LIKE %1
   AND  is_selected = 1
   AND  cacheKey NOT LIKE %2
 ";
-    $params1[1] = array("%{$cacheKey}%", 'String');
-    $params1[2] = array("%{$cacheKey}_alphabet%", 'String');
+    $params1[1] = array("{$cacheKey}%", 'String');
+    $params1[2] = array("{$cacheKey}_alphabet%", 'String');
     $paramsTotal     = CRM_Core_DAO::singleValueQuery($query, $params1);
     $params['total'] = $paramsTotal;
     $obj->_pager    = new CRM_Utils_Pager($params);