Hover being called on mobile devices causing button problems (3.7.6)

[dillrye]

Hello, I have noticed that after you click a button in 3.7.6, the hover state is being called even though there is not a mouse cursor. 

I was able to reproduce this in unity 4.6 using the "Control Widgets" demo scene with the latest code pulled from github(12/5/2014).  After you click on the button, it stays highlighted until you click elsewhere in the scene.

[ArenMook]

You need to turn off mouse events on the UICamera. Unity sends both touch and mouse from the same action.