Deprecate "exclusive" events option from trigger method

[jzaefferer]

Apparently trigger allows you to specify to trigger only non-namespaced events, via .trigger("click!"). Here's the implementation: ​https://github.com/jquery/jquery/blob/4534db196bf9475c79f74d6b62ebc866c27d06d9/src/event.js#L250-254 (line 250-254)

I don't see any mention of that in the documentation: ​http://api.jquery.com/trigger/

So either it should either be removed or documented.

[addyosmani]

Adding needsreview. I personally think this should be documented, however if there's a good reason it hasn't been to date, it would be interesting to find out what it is :)

[dmethvin]

We use exclusive events internally, in data events. However we've talked about deprecating those and when we remove them we can also remove exclusive events. That would be my preference.

These have never been in the formal documentation but have been mentioned in a few places:

​http://www.learningjquery.com/2007/09/namespace-your-events ​http://longgoldenears.blogspot.com/2010/02/jquery-namespaced-events-exclusive.html

[dmethvin]

I will mark this as done since there are no docs changes. This ticket will serve as notice. Removal will be done as a separate ticket in 1.9.