Re-document default arguments in `wp_link_pages()` using the hash-notation style.

Props taylorde.
Fixes #28680.

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git-svn-id: http://core.svn.wordpress.org/trunk@28698 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Add index key support for wp_list_pluck(), à la array_column().

props trepmal.
fixes #28666.

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git-svn-id: http://core.svn.wordpress.org/trunk@28699 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Add documentation for the default playlist shortcode attributes in `wp_playlist_shortcode()`.

Props taylorde.
Fixes #28678.

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git-svn-id: http://core.svn.wordpress.org/trunk@28700 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Notify developers when register_post_type() or register_taxonomy() fails because of post type or taxonomy key length.

props mattheweppelsheimer.
fixes #28683.
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git-svn-id: http://core.svn.wordpress.org/trunk@28701 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Use the `WPINC` constant when loading `class-phpass.php`

Props wojtek.szkutnik
See #14157.

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git-svn-id: http://core.svn.wordpress.org/trunk@28702 1a063a9b-81f0-0310-95a4-ce76da25c4cd
`WP_Filesystem_Base->abspath()` should use the `WPINC` constant

Props wojtek.szkutnik
See #14157.

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git-svn-id: http://core.svn.wordpress.org/trunk@28703 1a063a9b-81f0-0310-95a4-ce76da25c4cd
`wlwmanifest_link()` should use the `WPINC` constant

Props wojtek.szkutnik
See #14157.

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git-svn-id: http://core.svn.wordpress.org/trunk@28704 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Admin screens should use the `WPINC` constant

Props wojtek.szkutnik
See #14157.

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git-svn-id: http://core.svn.wordpress.org/trunk@28705 1a063a9b-81f0-0310-95a4-ce76da25c4cd
`WP_Scripts->in_default_dir()` should use the `WPINC` constant

Props wojtek.szkutnik
See #14157.

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git-svn-id: http://core.svn.wordpress.org/trunk@28706 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Use `includes_url()` in `wlwmanifest_link()`.

Props nacin.
See #14157.

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git-svn-id: http://core.svn.wordpress.org/trunk@28707 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Convert documentation of default arguments in `wp_list_authors()` to the hash-notation style.

Props Viper007Bond.
Fixes #28684.

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git-svn-id: http://core.svn.wordpress.org/trunk@28708 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Add initial unit tests for multisite's bootstrap.

props jeremyfelt.
fixes #27884.

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git-svn-id: http://core.svn.wordpress.org/trunk@28709 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Use `includes_url( ..., 'relative' )` in `script-loader.php` in lieu of hard-coding `/wp-includes/....` everywhere.

Fixes #14157.

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git-svn-id: http://core.svn.wordpress.org/trunk@28710 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Add a function, `get_comments_number_text()`, that returns instead of echoing. `comments_number()` wraps it.

Props kapeels, nbachiyski.
Fixes #10177.

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git-svn-id: http://core.svn.wordpress.org/trunk@28711 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Allow comments in the trash to marked as spam.

Props mordauk.
Fixes #19256.

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git-svn-id: http://core.svn.wordpress.org/trunk@28712 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Revert [28911] for performance concerns.

See #14157.

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git-svn-id: http://core.svn.wordpress.org/trunk@28713 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Normalize 'user_id' and 'user_ID' values in wp_new_comment() before passing the comment data to 'preprocess_comment' filter.

props dkotter.
fixes #23231.
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git-svn-id: http://core.svn.wordpress.org/trunk@28714 1a063a9b-81f0-0310-95a4-ce76da25c4cd