Use less greedy regex in `wptexturize()`. Adds unit tests.

Props miqrogroove.
See #28564.

Built from https://develop.svn.wordpress.org/trunk@28852


git-svn-id: http://core.svn.wordpress.org/trunk@28656 1a063a9b-81f0-0310-95a4-ce76da25c4cd
XML-RPC: Make sure wp.newPost does not produce a fatal error when a post_date field is included in the data.

props dllh.
fixes #28601.
Built from https://develop.svn.wordpress.org/trunk@28854


git-svn-id: http://core.svn.wordpress.org/trunk@28657 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Add a second optional parameter to `absint()` to limit the result to `PHP_INT_MAX`.

See #23383.

Built from https://develop.svn.wordpress.org/trunk@28855


git-svn-id: http://core.svn.wordpress.org/trunk@28658 1a063a9b-81f0-0310-95a4-ce76da25c4cd