Bootstrap: class-wp-locale.php needs to be require_once()-ed.

After [38364], the inclusion of `class-wp-locale.php` was changed from a `require_once()` to a `require()`. This caused problems for anything that called `load_text_domain_early()` prior to the `require()` but didn't bail, as it was now being `require()`-ed a second time.

With the use of `require_once()`, it doesn't really matter where it's loaded, so it has been moved next to the related `l10n.php` load.

See #37827.


Built from https://develop.svn.wordpress.org/trunk@38496


git-svn-id: http://core.svn.wordpress.org/trunk@38437 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-includes/version.php

@@ -4,7 +4,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '4.7-alpha-38495';
+$wp_version = '4.7-alpha-38496';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.