Don't generate adjacent links in wp_head() for attachments.

props kovshenin.
fixes #21658.
Built from https://develop.svn.wordpress.org/trunk@28770


git-svn-id: http://core.svn.wordpress.org/trunk@28583 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Don't add # to URL when clicking 'OK' without changing the permalink.

props avryl.
fixes #27594.
Built from https://develop.svn.wordpress.org/trunk@28771


git-svn-id: http://core.svn.wordpress.org/trunk@28584 1a063a9b-81f0-0310-95a4-ce76da25c4cd