Standardize usage of 'text domain' in inline documentation for wp-includes/l10n.php.

Props ericlewis, SergeyBiryukov.
Fixes #16750.

Built from https://develop.svn.wordpress.org/trunk@25586


git-svn-id: http://core.svn.wordpress.org/trunk@25503 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Inline documentation for hooks in wp-admin/includes/revision.php.

Fixes #25283.

Built from https://develop.svn.wordpress.org/trunk@25587


git-svn-id: http://core.svn.wordpress.org/trunk@25504 1a063a9b-81f0-0310-95a4-ce76da25c4cd