Related to #68. Awful patch to keep backward compatibility.

Author: emacarron

src/main/java/org/apache/ibatis/builder/xml/XMLConfigBuilder.java

@@ -241,6 +241,7 @@ private void databaseIdProviderElement(XNode context) throws Exception {
     DatabaseIdProvider databaseIdProvider = null;
     if (context != null) {
       String type = context.getStringAttribute("type");
+      if ("VENDOR".equals(type)) type = "DB_VENDOR"; // awful patch to keep backward compatibility
       Properties properties = context.getChildrenAsProperties();
       databaseIdProvider = (DatabaseIdProvider) resolveClass(type).newInstance();
       databaseIdProvider.setProperties(properties);