Use mysqli for WordPress development versions, regardless of PHP version, to increase testing footprint.

Allow the lack of ext/mysql to pass wp_check_php_mysql_versions().

see #21663.

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git-svn-id: http://core.svn.wordpress.org/trunk@27114 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Allow user_id to be an array of IDs in WP_Comment_Query.

props mordauk.
fixes #27064.

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git-svn-id: http://core.svn.wordpress.org/trunk@27115 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Allow current_time() to accept a date format string, adding to 'timestamp' and 'mysql'.

props danielbachhuber.
fixes #21653.

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git-svn-id: http://core.svn.wordpress.org/trunk@27116 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Make the user arguments for get_edit_profile_url() and get_dashboard_url() optional, defaulting to the current user.

props garyc40.
fixes #16686.

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git-svn-id: http://core.svn.wordpress.org/trunk@27117 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Remove _relocate_children(), which has had no purpose for some time.

props SergeyBiryukov, scribu.
fixes #19367.

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git-svn-id: http://core.svn.wordpress.org/trunk@27118 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Remove all `@package` and `@subpackage` PHPDoc tags not at the file- or class-levels in core.

See #27200.

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git-svn-id: http://core.svn.wordpress.org/trunk@27119 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Update the HTML5 Shiv across the default themes to 3.7.0.

props rickalee.
fixes #26491.

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Clarify return values for get_preferred_from_update_core() and get_core_updates().

props SergeyBiryukov.
fixes #20251.

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git-svn-id: http://core.svn.wordpress.org/trunk@27121 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Fix undefined variable. see #16686.

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git-svn-id: http://core.svn.wordpress.org/trunk@27122 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Fixed mixed spaces and tabs. Also remove trailing comma. see #26631.

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