Altered:
- Uncommented code inside of AMCrosshairOverlayVideoWidget that never
updated the crosshair coordinates.  The code was there and worked
immediately after being uncommented.

@davidChevrier, it looks like you commented out this code, was there a
reason for that?  If there was we can revert this change and leave
@epengr to cry with his crosshairs.
Updated the addPane() call to use the version from the Issue661.
Merge pull request #760 from acquaman/Issue757

Pull Request for Issue757

I quickly updated the addPane() call to look the same as the #661 branch. Everything else checks out. I looked at this on the SGM, and it doesn't appear to be drawing the crosshair at all. I'm guessing that one of the myriad of changes I made since I commented this out did the job. If it shows up again, I'll take care of it then.