TinyMCE: Propagate the dragover event outside the editor so drag-and-drop uploads can catch it.

props kovshenin.
see #19845.

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Eliminate some of our last remaining `create_function()` instances

* Moved some into private function callbacks
* Eliminated some that weren't necessary anymore

props obenland, markjaquith, nacin. fixes #14424
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git-svn-id: http://core.svn.wordpress.org/trunk@27222 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Slight renaming in our callback in [27373]. see #14424.

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

Props JoshuaAbenazer.
Fixes #26186

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Accept nooped plurals in wp_generate_tag_cloud() / wp_tag_cloud().

Renders topic_count_text_callback more or less obsolete. It can still be used, but passing a plural is easier.

fixes #27262. see #7989, #14424.

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Make OBJECT a case sensitive constant, for HHVM compatibility and general sanity.

Support `object` explicitly, and other forms using a fallback in wpdb.

fixes #27231.

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Support multiple editor instances when drag-and-drop-uploading onto them.

Also reduces z-index to below the toolbar, and adds a comment.

props kovshenin.
see #19845.

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git-svn-id: http://core.svn.wordpress.org/trunk@27227 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Generalize the hook documentation for the `set-screen-option` filter.

The filter covers more than [items]_per_page screen options.

Fixes #26186.

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git-svn-id: http://core.svn.wordpress.org/trunk@27228 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Let get_the_date() accept a post object.

props tanner-m, adamsilverstein, bigdawggi.
fixes #13771.

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