Add some unit tests for `is_object_in_term()`.

These tests check a number of the ways that different kinds of values for
`$terms` (integers that match term_id, strings that match term_id or name or
slug) are handled.

See #29467.
Built from https://develop.svn.wordpress.org/trunk@30204


git-svn-id: http://core.svn.wordpress.org/trunk@30204 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-includes/version.php

@@ -4,7 +4,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '4.1-alpha-30203';
+$wp_version = '4.1-alpha-30204';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.