Eliminate use of `extract()` in `wp_dropdown_pages()`. 

Adds unit tests to: `tests/post/template.php`. 
There was previously only one wimpy assertion for `wp_dropdown_pages()`.
	
See #22400.

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git-svn-id: http://core.svn.wordpress.org/trunk@28227 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Eliminate use of `extract()` in `wp_list_pages()` which, surprisingly, didn't even use any of the extracted variables.
	
See #22400.

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git-svn-id: http://core.svn.wordpress.org/trunk@28228 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Eliminate use of `extract()` in `Walker_Page::start_el()`.
	
See #22400.

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git-svn-id: http://core.svn.wordpress.org/trunk@28229 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Eliminate use of `extract()` in `get_bookmarks()`.
	
See #22400.

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git-svn-id: http://core.svn.wordpress.org/trunk@28230 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Eliminate use of `extract()` in `_walk_bookmarks()`.
	
See #22400.

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git-svn-id: http://core.svn.wordpress.org/trunk@28231 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Eliminate use of `extract()` in `wp_list_bookmarks()`.
	
See #22400.

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git-svn-id: http://core.svn.wordpress.org/trunk@28232 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Eliminate use of `extract()` in `wp_insert_link()`.
	
See #22400.

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git-svn-id: http://core.svn.wordpress.org/trunk@28233 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Eliminate use of `extract()` in `get_media_item()`.
	
To test, fire open the old media in the console: `tb_show('Old Media is Weird', 'media-upload.php?type=image&TB_iframe=true&post_id=0');`	
	
See #22400.

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git-svn-id: http://core.svn.wordpress.org/trunk@28234 1a063a9b-81f0-0310-95a4-ce76da25c4cd
(REALLY) Eliminate use of `extract()` in `wp_insert_link()`.

See #22400.

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git-svn-id: http://core.svn.wordpress.org/trunk@28235 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Eliminate use of `extract()` in `wp_star_rating()`.
	
See #22400.

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git-svn-id: http://core.svn.wordpress.org/trunk@28236 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Eliminate use of `extract()` in `wp_terms_checklist()`.
	
See #22400.

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git-svn-id: http://core.svn.wordpress.org/trunk@28237 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Eliminate use of `extract()` in `Walker_Category_Checklist::start_el()`.
	
See #22400.

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git-svn-id: http://core.svn.wordpress.org/trunk@28238 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Eliminate use of `extract()` in `wp_xmlrpc_server::blogger_editPost()`.
	
See #22400.

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git-svn-id: http://core.svn.wordpress.org/trunk@28239 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Update the inline docs for `add_shortcode()` to eliminate suggestion to use `extract()`.
	
See #22400.

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git-svn-id: http://core.svn.wordpress.org/trunk@28240 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Eliminate use of `extract()` in `gallery_shortcode()`.
	
See #22400.

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git-svn-id: http://core.svn.wordpress.org/trunk@28241 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Eliminate use of `extract()` in `get_the_taxonomies()`. Adds unit test.
	
See #22400.

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git-svn-id: http://core.svn.wordpress.org/trunk@28242 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Eliminate one of the uses of `extract()` in `wp_handle_sideload()`.
	
See #22400.

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git-svn-id: http://core.svn.wordpress.org/trunk@28243 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Eliminate one of the uses of `extract()` in `wp_handle_upload()`.
	
See #22400.

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git-svn-id: http://core.svn.wordpress.org/trunk@28244 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Eliminate the use of `extract()` in `WP_Upgrader`.
	
See #22400.

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git-svn-id: http://core.svn.wordpress.org/trunk@28245 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Set `@param` back to `$output`, not `$html`, in the inline filter docs. This was a copy/paste mistake.

See #22400.


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git-svn-id: http://core.svn.wordpress.org/trunk@28246 1a063a9b-81f0-0310-95a4-ce76da25c4cd