Revert "Fix #13291, no longer need the functionish-regex guard."

Turns out this is still needed by Safari 5.1, which we're still supporting.

This reverts commit c4b1da40075532e4f14821b1519ae0ef6665bf1e.
Fix comment about Safari shortfalls.
Fix #13349. No need to sort simple .find() cases.
Minor updates. All parameters of an internal function are for internal use only.
Revert change to visible/hidden selectors until 1.10 and 2.1. Reopens #13132, #10406.
Magic fixing for previous commit
event: Stricter type checking in trigger - Fixes #13360 - Closes gh-1153

Squashed commit of the following:

commit 5935a362c75ecef04d5ec9775cbcaf2165921e8d
Author: Andrew Plummer <plummer.andrew@gmail.com>
Date:   Fri Feb 1 02:40:42 2013 +0900

    Using "hasOwnProperty" to check for direct properties "type" and
    "namespace" on events before triggering.
(cherry picked from commit f005af54e4983658e3ae504111885921c4dca383)
Adding @andrewplummer to AUTHORS.txt
Fix #13335. Remove "use strict".
Update Sizzle: detached node sorting in Webkit. Fixes #13331.