Check bad dates and redirect, instead of 404ing, as necessary and appropriate. 
Adds query, conditional, and canonical Unit Tests.

Props kovshenin, SergeyBiryukov, DrewAPicture.
Fixes #10935.



git-svn-id: http://develop.svn.wordpress.org/trunk@25280 602fd350-edb4-49c9-b593-d223f7449a82
Inline documentation for hooks in xmlrpc.php.

The old link for RSD is dead; update to the new one.

props bftrick.
see #25229.


git-svn-id: http://develop.svn.wordpress.org/trunk@25281 602fd350-edb4-49c9-b593-d223f7449a82
Document comment_edit_redirect.

props dustyf.
see #25229.


git-svn-id: http://develop.svn.wordpress.org/trunk@25282 602fd350-edb4-49c9-b593-d223f7449a82
Mark the hooks in custom-background.php as duplicates.
 * image_size_names_choose should be documented in wp-includes/media.php
 * wp_create_file_in_uploads should be documented in custom-header.php

see #25229.


git-svn-id: http://develop.svn.wordpress.org/trunk@25283 602fd350-edb4-49c9-b593-d223f7449a82
Document the 'query' filter in wp-db.

props natejacobs.
see #25229.


git-svn-id: http://develop.svn.wordpress.org/trunk@25284 602fd350-edb4-49c9-b593-d223f7449a82
Use `get_the_title()` when dealing with `post_type`-like items in the admin. 

Props nacin, DrewAPicture.
Fixes #14975.



git-svn-id: http://develop.svn.wordpress.org/trunk@25285 602fd350-edb4-49c9-b593-d223f7449a82
Inline docs for hooks in MagPie.

props natejacobs.
see #25229.


git-svn-id: http://develop.svn.wordpress.org/trunk@25286 602fd350-edb4-49c9-b593-d223f7449a82
Allow `is_tag()` to accept `term_id`, `slug`, 'term_name` or array of any. Many other `is_*()` funcs already do this. Adds unit tests.

Props ramiy.
Fixes #18746.



git-svn-id: http://develop.svn.wordpress.org/trunk@25287 602fd350-edb4-49c9-b593-d223f7449a82
Correct @since in admin-footer. see #25229.


git-svn-id: http://develop.svn.wordpress.org/trunk@25288 602fd350-edb4-49c9-b593-d223f7449a82
Introduce `wp_using_ext_object_cache()` - mimic `wp_suspend_cache_invalidation()` and discourage direct access to `$_wp_using_ext_object_cache`, cleaning up importing of globals in functions and provides function to modify that global.  Loads the packaged object cache when an external cache hasn't been loaded or doesn't contain `wp_cache_init()`.

Fixes #21401.



git-svn-id: http://develop.svn.wordpress.org/trunk@25289 602fd350-edb4-49c9-b593-d223f7449a82