Added validation testing to pointreg, along with new tests. Added new method...

Added validation testing to pointreg, along with new tests.  Added new method UpdatedTemplate() to AutoReg so callers can get the parameters the object was actually run with, not simply initialized with.  Added new accessors to AutoReg to support this new functionality.

git-svn-id: http://subversion.wr.usgs.gov/repos/prog/isis3/trunk@4181 41f8697f-d340-4b68-9986-7bafba869bb8