[Insight-developers] itk::Image updates

[Damion Shelton]

I checked in a few changes to the Image base class from before the Nov. 
meeting. These include:

Two new functions, TransformIndexToPhysicalPoint and 
TransformPhysicalPointToIndex, which differ from the two existing functions 
only in the type of index they operate on.

Also, the two TransformPhys... functions now return a bool indicating 
whether or not the resulting index is within the bounds of 
LargestPossibleRegion. This is an important thing to know in many cases.

None of the above changes should affect existing code, and things are 
building cleanly on my platform, but please let me know if there are any 
problems.

Thanks,

-Damion-