jQuery 1.9.1 and jQuery Migrate 1.1.0.

Remains uncompressed for now, until we work out all 1.9.x issues.
Fixes custom fields.

props ocean90, wonderboymusic. see #22975.



git-svn-id: http://core.svn.wordpress.org/trunk@23421 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Update our Windows media file MIME types to the official Microsoft-recommended ones.

props niallkennedy, wonderboymusic. fixes #14253

git-svn-id: http://core.svn.wordpress.org/trunk@23422 1a063a9b-81f0-0310-95a4-ce76da25c4cd
jQuery UI 1.10.0.

Some lingering issues with the edit/insert link dialog.

props ocean90.
see #23370.



git-svn-id: http://core.svn.wordpress.org/trunk@23423 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Filter "Powered by WordPress" text in Meta widget. props Viper007Bond, wonderboymusic. fixes #14358.

git-svn-id: http://core.svn.wordpress.org/trunk@23424 1a063a9b-81f0-0310-95a4-ce76da25c4cd
"LGPL License" is redundant.

props wonderboymusic, jakub.tyrcha. fixes #15585

git-svn-id: http://core.svn.wordpress.org/trunk@23425 1a063a9b-81f0-0310-95a4-ce76da25c4cd