* Fill in undefined var in `Tests_Option_BlogOption`
* Add `defined()` check for `BLOGSUPLOADDIR`
* Suppress deprecated function notices for `is_blog_user()` and `get_dashboard_blog()`
* Check existence of `$user` in `wpmu_log_new_registrations()` before arbitrarily making a database query

Fixes all notices in multisite unit tests.

See #25282.


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Return false from wp_get_referer() if it is called before wp_validate_redirect() is defined.

see #25294.

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Return false from wp_get_original_referer() if it is called before wp_validate_redirect() is defined.

see #25294.

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git-svn-id: http://core.svn.wordpress.org/trunk@25331 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Add file size to attachment publish meta box. props desrosj. fixes #25170.

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git-svn-id: http://core.svn.wordpress.org/trunk@25333 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Fix the failing `Tests_Link::test_wp_get_shortlink()` assertion:

* `wp_get_shortlink()` was firing a notice when reading `$post->ID` while `$post` was null in some cases
* Before the assertions that assume `$GLOBALS['post']` is not set, call `unset( $GLOBALS['post'] );` - there was global spillage from other tests

See #25282.



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Twenty Fourteen: fix comment for `twentyfourteen_excerpt_length()`, props SergeyBiryukov. Fixes #25297.
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Inline docs for hooks in `wp-includes/nav-menu-template.php`. props Faison. see #25229.

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Inline docs for hooks in `wp-admin/options-writing.php`. props siobhyb. see #25229.

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git-svn-id: http://core.svn.wordpress.org/trunk@25337 1a063a9b-81f0-0310-95a4-ce76da25c4cd
No space between // and duplicate_hook. see #25229

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git-svn-id: http://core.svn.wordpress.org/trunk@25338 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Fix comma placement in [25179].

props gradyetc.
see #15004, fixes #25298.

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git-svn-id: http://core.svn.wordpress.org/trunk@25339 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Add populate_network_meta filter to populate_network().

props jeremyfelt.
fixes #25020.

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Clear all transients (regardless of expiration) on all database upgrades. see #20316.

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Twenty Fourteen: prefix Genericons enqueue handle so that the theme uses the its own version of the font CSS. Fixes a few display issues when plugins like Jetpack enqueue a different version of Genericons. See #25085.
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Twenty Fourteen: let authors customize the green "accent" color by changing to a different hex value in the Customizer. Props celloexpressions.

Also add an ID attribute to all `style` elements.

See #25220.
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Inline documentation fixes and additions for wp-admin/revision.php and wp-admin/includes/revision.php.

props adamsilverstein.
see #25283.
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Better alignment for wp_prepare_revisions_for_js() inline docs. see #25283.
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WordPress Core Automatic Updates: Add the first slice of Automatic Upgrades, This is presently disabled, and requires a filter to enable ( 'auto_upgrade_core' ). See #22704

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WordPress Core Automatic Updates: Pass the Filesystem path as $context to request_filesystem_credentials(). See #22704

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

props natejacobs.
see #25229.
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Inline documentation for hooks in wp-admin/ms-delete-site.php.

props NikV.
see #25229.
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