Fix syntax for inline comment line endings and a few line wraps in wp-includes/post.php inline documentation.

Fixes #25412.

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git-svn-id: http://core.svn.wordpress.org/trunk@28883 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Media Grid: after [29085], also handle `MEDIA_TRASH`.

See #24716.

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git-svn-id: http://core.svn.wordpress.org/trunk@28884 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Escape taxonomy name when used in attributes in post_categories_meta_box().

props pbearne.
fixes #28836.
Built from https://develop.svn.wordpress.org/trunk@29099


git-svn-id: http://core.svn.wordpress.org/trunk@28885 1a063a9b-81f0-0310-95a4-ce76da25c4cd