Avoid a notice for an undefined $checksums variable when updating from pre-3.7 to post-3.7.

props GaryJ.
fixes #25689 for trunk.

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3.7 regression: Fix the width of captioned images inserted into the visual editor.

Pulls some arithmetic outside of some string concatenation to avoid a nasty uglify.js regression: https://github.com/mishoo/UglifyJS2/pull/330.

props LucP.
fixes #25700 for trunk.

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3.7 regression from [25119]: Have in_category() return false when the first argument is empty.

Adds unit tests.

props ericlewis.
fixes #25706 for trunk.

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In update_option(), call the update_option hook before the DB update.

Reverses a regression from [25664].

props calin.
fixes #25705 for trunk.

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Have get_current_user_id() return 0 when pluggable.php is not yet included (which brings the ability to set or get the current user).

fixes #25690 for trunk.

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In search stopwords filtering, suppress possible PHP warnings when PCRE lacks UTF-8 support.

see #25709.

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Fix the exclude_tree argument in get_terms(), which fixes the exclude argument in wp_list_categories().

This was a 3.7 regression caused by [25162].

props dd32.
see #25710 for trunk.

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Inline documentation for hooks in wp-includes/bookmark.php.

Props ShinichiN, kpdesign.
Fixes #25468.

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Inline documentation for hooks in wp-admin/includes/nav-menu.php.

Props Faison.
Fixes #25474.

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Inline documentation for hooks in wp-admin/tool.php.

Props dougwollison for the initial patch.
Fixes #25496.

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Inline documentation for hooks in wp-admin/includes/schema.php.

Props johnafish, kpdesign.
Fixes #25498.

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Inline documentation for hooks in wp-admin/network/site-users.php.

Props sboisvert for the initial patch. Props kpdesign.
Fixes #25497.

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Inline documentation for hooks in wp-includes/class-wp.php.

Props dougwollison.
Fixes #25495.

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Inline documentation for hooks in wp-includes/admin-bar.php.

Props swissspidy.
Fixes #25508.

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Inline documentation for hooks in wp-admin/async-upload.php.

Props rzen for the initial patch.
Fixes #25517.

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Bump the TinyMCE version for 3.8, see #25700.
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Fix error introduced in [25940] where `$public_query_vars` should have only been used as a non-existent inline docs variable in the `query_vars` filter.

Restores `$this->public_query_vars` to the `query_vars` filter in wp-includes/class-wp.php.

Props mauryaratan.
Fixes #25495. See #25719.

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Revert another instance where a `WP` property was assigned to a one-time variable for inline docs purposes.

Referencing a non-existent variable only in the docs here would have been the better choice.

See #25495.

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Update readme in trunk.

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Allow passing `false` for the `meta_box_cb` arg in `register_taxonomy()` to turn off the meta box display entirely. fixes #21543.

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