TinyMCE: update to 4.6.3. Fixes few more edge cases with link boundaries. Changelog: https://www.tinymce.com/docs/changelog/#version463-may302017

Fixes #40890.
Built from https://develop.svn.wordpress.org/trunk@40856


git-svn-id: http://core.svn.wordpress.org/trunk@40707 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-includes/js/tinymce/plugins/charmap/plugin.js

@@ -564,14 +564,17 @@ define(
                   minWidth: 140,
                   minHeight: 80
                 },
+                {
+                  type: 'spacer',
+                  minHeight: 20
+                },
                 {
                   type: 'label',
                   name: 'previewTitle',
                   text: ' ',
-                  style: 'text-align: center',
+                  style: 'white-space: pre-wrap;',
                   border: 1,
-                  minWidth: 140,
-                  minHeight: 80
+                  minWidth: 140
                 }
               ]
             }

wp-includes/version.php

@@ -4,7 +4,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '4.8-RC1-40853';
+$wp_version = '4.8-RC1-40856';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.
@@ -18,7 +18,7 @@ $wp_db_version = 38590;
  *
  * @global string $tinymce_version
  */
-$tinymce_version = '4602-20170526';
+$tinymce_version = '4603-20170530';
 
 /**
  * Holds the required PHP version