New functions added on 18/06/2016:
- __autoload
- _backup_plugin_globals
- _prime_term_caches
- _restore_plugin_globals
- get_current_network_id
- get_sites
- spl_autoload_functions
- spl_autoload_register
- spl_autoload_unregister
- wp_ajax_delete_plugin
- wp_ajax_delete_theme
- wp_ajax_install_plugin
- wp_ajax_install_theme
- wp_ajax_search_install_plugins
- wp_ajax_search_plugins
- wp_ajax_test_url
- wp_ajax_update_theme
- wp_check_jsonp_callback
- wp_filter_pre_oembed_result
- wp_get_canonical_url
- wp_page_reload_on_back_button_js
- wp_print_admin_notice_templates
- wp_print_update_row_templates