Docs: Add `@access` entries for `$admin_header_callback` and `$admin_image_div_callback` properties in `Custom_Image_Header` and `Custom_Background`.

Props rushabh4486.
Fixes #41377.
Built from https://develop.svn.wordpress.org/trunk@41100


git-svn-id: http://core.svn.wordpress.org/trunk@40940 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-admin/custom-background.php

@@ -18,6 +18,7 @@ class Custom_Background {
 	 *
 	 * @var callable
 	 * @since 3.0.0
+	 * @access public
 	 */
 	public $admin_header_callback;
 
@@ -26,6 +27,7 @@ class Custom_Background {
 	 *
 	 * @var callable
 	 * @since 3.0.0
+	 * @access public
 	 */
 	public $admin_image_div_callback;
 

wp-admin/custom-header.php

@@ -18,6 +18,7 @@ class Custom_Image_Header {
 	 *
 	 * @var callable
 	 * @since 2.1.0
+	 * @access public
 	 */
 	public $admin_header_callback;
 
@@ -26,6 +27,7 @@ class Custom_Image_Header {
 	 *
 	 * @var callable
 	 * @since 3.0.0
+	 * @access public
 	 */
 	public $admin_image_div_callback;
 

wp-includes/version.php

@@ -4,7 +4,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '4.9-alpha-41099';
+$wp_version = '4.9-alpha-41100';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.