Dual Listener Support for gesture and tap.

[tilomitra]

This references Trac #2533158.

I am pushing all work related to dual listener support to the dual-listener branch on my fork of yui3.

Part of the fix was provided by @grayrest (#471) but simply merging that would mean that tap callbacks would get fired twice, so there is some work needed to clean up that implementation.

[andrewnicols]

Just wondering how this is progressing. You suggested in the old tracker issue that you were hoping to get a fix out soon.

Cheers

[tilomitra]

@andrewnicols I'm trying to figure out the best way to prevent something like 'tap' from firing twice on a device with mouse and touch capabilities. I have the dual listener working. Now it's a matter of not firing one if the other fires.

[tilomitra]

I updated my event-tap dual-listener branch with this fix.

[tilomitra]

This is done, since we merged #986.