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

The extracted variables set/overwrite globals. `$user` does not need to be pulled from `validate_blog_form()` as it is not used in this function.

See #22400.

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git-svn-id: http://core.svn.wordpress.org/trunk@28272 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Eliminate use of `extract()` in `validate_user_signup()`. 

`$orig_username` does not need to be pulled from `validate_user_form()` as it is not used in this function.

See #22400.

Built from https://develop.svn.wordpress.org/trunk@28446


git-svn-id: http://core.svn.wordpress.org/trunk@28273 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Eliminate use of `extract()` in `validate_blog_signup()`:

* `$orig_username` does not need to be pulled from `wpmu_validate_user_signup()` as it is not used in this function.
* `$user` does not need to be pulled from `wpmu_validate_blog_signup()` as it is not used in this function.
* For the `wpmu_validate_user_signup()` portion, rename `$result` and `$errors` to $user_result` and `$user_errors` for disambiguation with the blog values below.

See #22400.

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git-svn-id: http://core.svn.wordpress.org/trunk@28274 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Eliminate use of `extract()` in `wp_xmlrpc_server::mw_editPost()` (MetaWeblog API, y'all). 

A lot of the extracted variables are overwritten by being explicitly set later. 
Only set variables that would otherwise not be present with `compact()` is called.

See #22400.

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git-svn-id: http://core.svn.wordpress.org/trunk@28275 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Eliminate use of `extract()` in `wp_widget_rss_form()`.

See #22400.

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git-svn-id: http://core.svn.wordpress.org/trunk@28276 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Eliminate use of `extract()` in `wp_handle_upload()`.

See #22400.

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git-svn-id: http://core.svn.wordpress.org/trunk@28277 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Eliminate use of `extract()` in `wp_handle_sideload()`.

See #22400.

Built from https://develop.svn.wordpress.org/trunk@28451


git-svn-id: http://core.svn.wordpress.org/trunk@28278 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Update inline docs for `wp_handle_upload|sideload` to reflect their non-use of `extract()`.

See #22400.


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git-svn-id: http://core.svn.wordpress.org/trunk@28279 1a063a9b-81f0-0310-95a4-ce76da25c4cd
In `wp_xmlrpc_server::mw_editPost`, also set `$post_type = $postdata['post_type']`.

See #22400, [28448].


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git-svn-id: http://core.svn.wordpress.org/trunk@28280 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Eliminate use of `extract()` in `wp_insert_user()`.

See #22400.

Built from https://develop.svn.wordpress.org/trunk@28454


git-svn-id: http://core.svn.wordpress.org/trunk@28281 1a063a9b-81f0-0310-95a4-ce76da25c4cd
DFW: fix closing only the wpLink or media modal when pressing Esc.
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git-svn-id: http://core.svn.wordpress.org/trunk@28282 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Eliminate use of `extract()` in `request_filesystem_credentials()`. 

The only property that doesn't need to be set to a variable is `$password`.

See #22400.

Built from https://develop.svn.wordpress.org/trunk@28456


git-svn-id: http://core.svn.wordpress.org/trunk@28283 1a063a9b-81f0-0310-95a4-ce76da25c4cd