Check both slug and name when determining if is_term(). fixes #6593 for trunk

git-svn-id: https://develop.svn.wordpress.org/trunk@8433 602fd350-edb4-49c9-b593-d223f7449a82

wp-admin/includes/schema.php

@@ -19,7 +19,8 @@ $wp_queries="CREATE TABLE $wpdb->terms (
  slug varchar(200) NOT NULL default '',
  term_group bigint(10) NOT NULL default 0,
  PRIMARY KEY  (term_id),
- UNIQUE KEY slug (slug)
+ UNIQUE KEY slug (slug),
+ KEY name (name)
 ) $charset_collate;
 CREATE TABLE $wpdb->term_taxonomy (
  term_taxonomy_id bigint(20) NOT NULL auto_increment,