[8u60] Review request for RT-37476

[Morris Meyer]

Kevin and Jim,

Could you please review the following changes to the Ensemble8 
GestureEventApp and MultiTouchImageView.  I have tested them on my Mac 
Pro running 10.10.1 with the Apple Magic Trackpad.

Thanks much,

     --morris

WEBREV - http://cr.openjdk.java.net/~morris/RT-37476.01/
JIRA - https://javafx-jira.kenai.com/browse/RT-37476