Taxonomy: Improve 'Parent' label when editing taxonomy terms.

Instead of the hardcoded 'Parent', use the `parent_item` label.

Props abrain, dlh.
Fixes #34545.
Built from https://develop.svn.wordpress.org/trunk@40146


git-svn-id: http://core.svn.wordpress.org/trunk@40085 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-admin/edit-tag-form.php

@@ -146,7 +146,7 @@ do_action( "{$taxonomy}_term_edit_form_top", $tag, $taxonomy );
 <?php } ?>
 <?php if ( is_taxonomy_hierarchical($taxonomy) ) : ?>
 		<tr class="form-field term-parent-wrap">
-			<th scope="row"><label for="parent"><?php _ex( 'Parent', 'term parent' ); ?></label></th>
+			<th scope="row"><label for="parent"><?php echo esc_html( $tax->labels->parent_item ); ?></label></th>
 			<td>
 				<?php
 				$dropdown_args = array(

wp-admin/edit-tags.php

@@ -399,7 +399,7 @@ do_action( "{$taxonomy}_term_new_form_tag" );
 <?php endif; // global_terms_enabled() ?>
 <?php if ( is_taxonomy_hierarchical($taxonomy) ) : ?>
 <div class="form-field term-parent-wrap">
-	<label for="parent"><?php _ex( 'Parent', 'term parent' ); ?></label>
+	<label for="parent"><?php echo esc_html( $tax->labels->parent_item ); ?></label>
 	<?php
 	$dropdown_args = array(
 		'hide_empty'       => 0,

wp-includes/version.php

@@ -4,7 +4,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '4.8-alpha-40145';
+$wp_version = '4.8-alpha-40146';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.